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Finding the Fourth Proportional to 528,005.20, 792,007.80 and 496,901.20

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Solution

The fourth proportional to 528,005.20, 792,007.80 and 496,901.20 is: 745,351.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,005.20 : 792,007.80 = 496,901.20 : x
  2. Step 2: Convert to fraction form
    528,005.20/792,007.80 = 496,901.20/x
  3. Step 3: Cross multiply
    528,005.20x = 792,007.80 × 496,901.20
  4. Step 4: Simplify right side
    528,005.20x = 393,549,626,229.36
  5. Step 5: Solve for x
    x = 393,549,626,229.36/528,005.20
  6. Step 6: Final answer
    x = 745,351.80

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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.