Home / 1,387,707.12-1,915,355.88-903,429

Finding the Fourth Proportional to 1,387,707.12, 1,915,355.88 and 903,429

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Solution

The fourth proportional to 1,387,707.12, 1,915,355.88 and 903,429 is: 1,246,940.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,707.12 : 1,915,355.88 = 903,429 : x
  2. Step 2: Convert to fraction form
    1,387,707.12/1,915,355.88 = 903,429/x
  3. Step 3: Cross multiply
    1,387,707.12x = 1,915,355.88 × 903,429
  4. Step 4: Simplify right side
    1,387,707.12x = 1,730,388,047,312.52
  5. Step 5: Solve for x
    x = 1,730,388,047,312.52/1,387,707.12
  6. Step 6: Final answer
    x = 1,246,940.38

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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.