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Finding the Fourth Proportional to 611,603.10, 917,404.65 and 372,454.65

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Solution

The fourth proportional to 611,603.10, 917,404.65 and 372,454.65 is: 558,681.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,603.10 : 917,404.65 = 372,454.65 : x
  2. Step 2: Convert to fraction form
    611,603.10/917,404.65 = 372,454.65/x
  3. Step 3: Cross multiply
    611,603.10x = 917,404.65 × 372,454.65
  4. Step 4: Simplify right side
    611,603.10x = 341,691,627,824.12
  5. Step 5: Solve for x
    x = 341,691,627,824.12/611,603.10
  6. Step 6: Final answer
    x = 558,681.98

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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.