Home / 513,219,375.40-769,829,063.10-508,684,412.20

Finding the Fourth Proportional to 513,219,375.40, 769,829,063.10 and 508,684,412.20

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Solution

The fourth proportional to 513,219,375.40, 769,829,063.10 and 508,684,412.20 is: 763,026,618.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,219,375.40 : 769,829,063.10 = 508,684,412.20 : x
  2. Step 2: Convert to fraction form
    513,219,375.40/769,829,063.10 = 508,684,412.20/x
  3. Step 3: Cross multiply
    513,219,375.40x = 769,829,063.10 × 508,684,412.20
  4. Step 4: Simplify right side
    513,219,375.40x = 391,600,044,457,500,224
  5. Step 5: Solve for x
    x = 391,600,044,457,500,224/513,219,375.40
  6. Step 6: Final answer
    x = 763,026,618.30

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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.