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Finding the Fourth Proportional to 557,672.80, 836,509.20 and 507,809.20

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Solution

The fourth proportional to 557,672.80, 836,509.20 and 507,809.20 is: 761,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,672.80 : 836,509.20 = 507,809.20 : x
  2. Step 2: Convert to fraction form
    557,672.80/836,509.20 = 507,809.20/x
  3. Step 3: Cross multiply
    557,672.80x = 836,509.20 × 507,809.20
  4. Step 4: Simplify right side
    557,672.80x = 424,787,067,644.64
  5. Step 5: Solve for x
    x = 424,787,067,644.64/557,672.80
  6. Step 6: Final answer
    x = 761,713.80

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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.