Home / 1,399,458.92-1,931,173.38-787,637.16

Finding the Fourth Proportional to 1,399,458.92, 1,931,173.38 and 787,637.16

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Solution

The fourth proportional to 1,399,458.92, 1,931,173.38 and 787,637.16 is: 1,086,894.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,458.92 : 1,931,173.38 = 787,637.16 : x
  2. Step 2: Convert to fraction form
    1,399,458.92/1,931,173.38 = 787,637.16/x
  3. Step 3: Cross multiply
    1,399,458.92x = 1,931,173.38 × 787,637.16
  4. Step 4: Simplify right side
    1,399,458.92x = 1,521,063,916,490.80
  5. Step 5: Solve for x
    x = 1,521,063,916,490.80/1,399,458.92
  6. Step 6: Final answer
    x = 1,086,894.30

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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.