Home / 579,405,841.20-869,108,761.80-515,916,356.40

Finding the Fourth Proportional to 579,405,841.20, 869,108,761.80 and 515,916,356.40

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Solution

The fourth proportional to 579,405,841.20, 869,108,761.80 and 515,916,356.40 is: 773,874,534.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,405,841.20 : 869,108,761.80 = 515,916,356.40 : x
  2. Step 2: Convert to fraction form
    579,405,841.20/869,108,761.80 = 515,916,356.40/x
  3. Step 3: Cross multiply
    579,405,841.20x = 869,108,761.80 × 515,916,356.40
  4. Step 4: Simplify right side
    579,405,841.20x = 448,387,425,703,171,456
  5. Step 5: Solve for x
    x = 448,387,425,703,171,456/579,405,841.20
  6. Step 6: Final answer
    x = 773,874,534.60

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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.