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Finding the Fourth Proportional to 487,572.35, 730,878.66 and 284,911.25

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Solution

The fourth proportional to 487,572.35, 730,878.66 and 284,911.25 is: 427,086.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,572.35 : 730,878.66 = 284,911.25 : x
  2. Step 2: Convert to fraction form
    487,572.35/730,878.66 = 284,911.25/x
  3. Step 3: Cross multiply
    487,572.35x = 730,878.66 × 284,911.25
  4. Step 4: Simplify right side
    487,572.35x = 208,235,548,964.53
  5. Step 5: Solve for x
    x = 208,235,548,964.53/487,572.35
  6. Step 6: Final answer
    x = 427,086.46

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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.