Home / 1,247,329.18-1,721,581.32-788,152.20

Finding the Fourth Proportional to 1,247,329.18, 1,721,581.32 and 788,152.20

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Solution

The fourth proportional to 1,247,329.18, 1,721,581.32 and 788,152.20 is: 1,087,818.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,329.18 : 1,721,581.32 = 788,152.20 : x
  2. Step 2: Convert to fraction form
    1,247,329.18/1,721,581.32 = 788,152.20/x
  3. Step 3: Cross multiply
    1,247,329.18x = 1,721,581.32 × 788,152.20
  4. Step 4: Simplify right side
    1,247,329.18x = 1,356,868,104,836.90
  5. Step 5: Solve for x
    x = 1,356,868,104,836.90/1,247,329.18
  6. Step 6: Final answer
    x = 1,087,818.78

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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.