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Finding the Fourth Proportional to 608,901.20, 911,602.20 and 545,915.60

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Solution

The fourth proportional to 608,901.20, 911,602.20 and 545,915.60 is: 817,304.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,901.20 : 911,602.20 = 545,915.60 : x
  2. Step 2: Convert to fraction form
    608,901.20/911,602.20 = 545,915.60/x
  3. Step 3: Cross multiply
    608,901.20x = 911,602.20 × 545,915.60
  4. Step 4: Simplify right side
    608,901.20x = 497,657,861,974.32
  5. Step 5: Solve for x
    x = 497,657,861,974.32/608,901.20
  6. Step 6: Final answer
    x = 817,304.78

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1.5x scale

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.