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Finding the Fourth Proportional to 515,511.90, 773,267.85 and 507,638.70

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Solution

The fourth proportional to 515,511.90, 773,267.85 and 507,638.70 is: 761,458.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,511.90 : 773,267.85 = 507,638.70 : x
  2. Step 2: Convert to fraction form
    515,511.90/773,267.85 = 507,638.70/x
  3. Step 3: Cross multiply
    515,511.90x = 773,267.85 × 507,638.70
  4. Step 4: Simplify right side
    515,511.90x = 392,540,686,125.80
  5. Step 5: Solve for x
    x = 392,540,686,125.80/515,511.90
  6. Step 6: Final answer
    x = 761,458.05

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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.