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Finding the Fourth Proportional to 569,821.30, 854,731.95 and 320,470.90

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Solution

The fourth proportional to 569,821.30, 854,731.95 and 320,470.90 is: 480,706.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,821.30 : 854,731.95 = 320,470.90 : x
  2. Step 2: Convert to fraction form
    569,821.30/854,731.95 = 320,470.90/x
  3. Step 3: Cross multiply
    569,821.30x = 854,731.95 × 320,470.90
  4. Step 4: Simplify right side
    569,821.30x = 273,916,717,275.26
  5. Step 5: Solve for x
    x = 273,916,717,275.26/569,821.30
  6. Step 6: Final answer
    x = 480,706.35

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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.