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Finding the Fourth Proportional to 607,048.40, 911,123.40 and 307,737.20

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Solution

The fourth proportional to 607,048.40, 911,123.40 and 307,737.20 is: 461,885.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,048.40 : 911,123.40 = 307,737.20 : x
  2. Step 2: Convert to fraction form
    607,048.40/911,123.40 = 307,737.20/x
  3. Step 3: Cross multiply
    607,048.40x = 911,123.40 × 307,737.20
  4. Step 4: Simplify right side
    607,048.40x = 280,386,563,970.48
  5. Step 5: Solve for x
    x = 280,386,563,970.48/607,048.40
  6. Step 6: Final answer
    x = 461,885.02

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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.