Home / 513,219,155.90-769,828,733.85-508,684,192.70

Finding the Fourth Proportional to 513,219,155.90, 769,828,733.85 and 508,684,192.70

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Solution

The fourth proportional to 513,219,155.90, 769,828,733.85 and 508,684,192.70 is: 763,026,289.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,219,155.90 : 769,828,733.85 = 508,684,192.70 : x
  2. Step 2: Convert to fraction form
    513,219,155.90/769,828,733.85 = 508,684,192.70/x
  3. Step 3: Cross multiply
    513,219,155.90x = 769,828,733.85 × 508,684,192.70
  4. Step 4: Simplify right side
    513,219,155.90x = 391,599,707,995,750,400
  5. Step 5: Solve for x
    x = 391,599,707,995,750,400/513,219,155.90
  6. Step 6: Final answer
    x = 763,026,289.05

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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.