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Finding the Fourth Proportional to 528,200.70, 792,301.05 and 317,730.30

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Solution

The fourth proportional to 528,200.70, 792,301.05 and 317,730.30 is: 476,595.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,200.70 : 792,301.05 = 317,730.30 : x
  2. Step 2: Convert to fraction form
    528,200.70/792,301.05 = 317,730.30/x
  3. Step 3: Cross multiply
    528,200.70x = 792,301.05 × 317,730.30
  4. Step 4: Simplify right side
    528,200.70x = 251,738,050,306.82
  5. Step 5: Solve for x
    x = 251,738,050,306.82/528,200.70
  6. Step 6: Final answer
    x = 476,595.45

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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.