Home / 1,387,685.12-1,915,325.52-903,407

Finding the Fourth Proportional to 1,387,685.12, 1,915,325.52 and 903,407

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Solution

The fourth proportional to 1,387,685.12, 1,915,325.52 and 903,407 is: 1,246,910.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,685.12 : 1,915,325.52 = 903,407 : x
  2. Step 2: Convert to fraction form
    1,387,685.12/1,915,325.52 = 903,407/x
  3. Step 3: Cross multiply
    1,387,685.12x = 1,915,325.52 × 903,407
  4. Step 4: Simplify right side
    1,387,685.12x = 1,730,318,482,046.64
  5. Step 5: Solve for x
    x = 1,730,318,482,046.64/1,387,685.12
  6. Step 6: Final answer
    x = 1,246,910.02

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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.