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Finding the Fourth Proportional to 614,412.20, 921,618.30 and 564,645.80

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Solution

The fourth proportional to 614,412.20, 921,618.30 and 564,645.80 is: 846,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,412.20 : 921,618.30 = 564,645.80 : x
  2. Step 2: Convert to fraction form
    614,412.20/921,618.30 = 564,645.80/x
  3. Step 3: Cross multiply
    614,412.20x = 921,618.30 × 564,645.80
  4. Step 4: Simplify right side
    614,412.20x = 520,387,902,298.14
  5. Step 5: Solve for x
    x = 520,387,902,298.14/614,412.20
  6. Step 6: Final answer
    x = 846,968.70

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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.