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Finding the Fourth Proportional to 610,424.80, 915,637.20 and 397,848.40

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Solution

The fourth proportional to 610,424.80, 915,637.20 and 397,848.40 is: 596,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,424.80 : 915,637.20 = 397,848.40 : x
  2. Step 2: Convert to fraction form
    610,424.80/915,637.20 = 397,848.40/x
  3. Step 3: Cross multiply
    610,424.80x = 915,637.20 × 397,848.40
  4. Step 4: Simplify right side
    610,424.80x = 364,284,795,000.48
  5. Step 5: Solve for x
    x = 364,284,795,000.48/610,424.80
  6. Step 6: Final answer
    x = 596,772.60

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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.