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Finding the Fourth Proportional to 528,430,658.20, 792,645,987.30 and 528,430,658.20

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Solution

The fourth proportional to 528,430,658.20, 792,645,987.30 and 528,430,658.20 is: 792,645,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,430,658.20 : 792,645,987.30 = 528,430,658.20 : x
  2. Step 2: Convert to fraction form
    528,430,658.20/792,645,987.30 = 528,430,658.20/x
  3. Step 3: Cross multiply
    528,430,658.20x = 792,645,987.30 × 528,430,658.20
  4. Step 4: Simplify right side
    528,430,658.20x = 418,858,440,788,527,808
  5. Step 5: Solve for x
    x = 418,858,440,788,527,808/528,430,658.20
  6. Step 6: Final answer
    x = 792,645,987.30

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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.