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Finding the Fourth Proportional to 607,108.80, 910,663.20 and 308,510.40

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Solution

The fourth proportional to 607,108.80, 910,663.20 and 308,510.40 is: 462,765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,108.80 : 910,663.20 = 308,510.40 : x
  2. Step 2: Convert to fraction form
    607,108.80/910,663.20 = 308,510.40/x
  3. Step 3: Cross multiply
    607,108.80x = 910,663.20 × 308,510.40
  4. Step 4: Simplify right side
    607,108.80x = 280,949,068,097.28
  5. Step 5: Solve for x
    x = 280,949,068,097.28/607,108.80
  6. Step 6: Final answer
    x = 462,765.60

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Double scale
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Similar ratio
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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.