Home / 1,288,561.76-1,778,239.32-715,655.60

Finding the Fourth Proportional to 1,288,561.76, 1,778,239.32 and 715,655.60

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Solution

The fourth proportional to 1,288,561.76, 1,778,239.32 and 715,655.60 is: 987,618.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,561.76 : 1,778,239.32 = 715,655.60 : x
  2. Step 2: Convert to fraction form
    1,288,561.76/1,778,239.32 = 715,655.60/x
  3. Step 3: Cross multiply
    1,288,561.76x = 1,778,239.32 × 715,655.60
  4. Step 4: Simplify right side
    1,288,561.76x = 1,272,606,927,498.19
  5. Step 5: Solve for x
    x = 1,272,606,927,498.19/1,288,561.76
  6. Step 6: Final answer
    x = 987,618.11

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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.