Home / 1,187,338,835.68-1,637,846,835.45-740,526,477.69

Finding the Fourth Proportional to 1,187,338,835.68, 1,637,846,835.45 and 740,526,477.69

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Solution

The fourth proportional to 1,187,338,835.68, 1,637,846,835.45 and 740,526,477.69 is: 1,021,501,960.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,338,835.68 : 1,637,846,835.45 = 740,526,477.69 : x
  2. Step 2: Convert to fraction form
    1,187,338,835.68/1,637,846,835.45 = 740,526,477.69/x
  3. Step 3: Cross multiply
    1,187,338,835.68x = 1,637,846,835.45 × 740,526,477.69
  4. Step 4: Simplify right side
    1,187,338,835.68x = 1,212,868,948,054,829,312
  5. Step 5: Solve for x
    x = 1,212,868,948,054,829,312/1,187,338,835.68
  6. Step 6: Final answer
    x = 1,021,501,960.19

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Double scale
Find fourth proportional to 1,187,338,836.68, 1,637,846,836.83 and 740,526,478.69
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.