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Finding the Fourth Proportional to 653,485,780.80, 915,560,337.60 and 653,485,780.80

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Solution

The fourth proportional to 653,485,780.80, 915,560,337.60 and 653,485,780.80 is: 915,560,337.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,485,780.80 : 915,560,337.60 = 653,485,780.80 : x
  2. Step 2: Convert to fraction form
    653,485,780.80/915,560,337.60 = 653,485,780.80/x
  3. Step 3: Cross multiply
    653,485,780.80x = 915,560,337.60 × 653,485,780.80
  4. Step 4: Simplify right side
    653,485,780.80x = 598,305,662,086,047,616
  5. Step 5: Solve for x
    x = 598,305,662,086,047,616/653,485,780.80
  6. Step 6: Final answer
    x = 915,560,337.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.