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Finding the Fourth Proportional to 572,521.20, 858,781.80 and 542,996.70

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Solution

The fourth proportional to 572,521.20, 858,781.80 and 542,996.70 is: 814,495.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,521.20 : 858,781.80 = 542,996.70 : x
  2. Step 2: Convert to fraction form
    572,521.20/858,781.80 = 542,996.70/x
  3. Step 3: Cross multiply
    572,521.20x = 858,781.80 × 542,996.70
  4. Step 4: Simplify right side
    572,521.20x = 466,315,683,420.06
  5. Step 5: Solve for x
    x = 466,315,683,420.06/572,521.20
  6. Step 6: Final answer
    x = 814,495.05

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Half scale
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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.