Home / 1,187,806.70-1,778,210.85-788,897.90

Finding the Fourth Proportional to 1,187,806.70, 1,778,210.85 and 788,897.90

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Solution

The fourth proportional to 1,187,806.70, 1,778,210.85 and 788,897.90 is: 1,181,022.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,806.70 : 1,778,210.85 = 788,897.90 : x
  2. Step 2: Convert to fraction form
    1,187,806.70/1,778,210.85 = 788,897.90/x
  3. Step 3: Cross multiply
    1,187,806.70x = 1,778,210.85 × 788,897.90
  4. Step 4: Simplify right side
    1,187,806.70x = 1,402,826,805,322.22
  5. Step 5: Solve for x
    x = 1,402,826,805,322.22/1,187,806.70
  6. Step 6: Final answer
    x = 1,181,022.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.