Home / 1,299,188,630.10-1,948,782,945.15-425,818,490.70

Finding the Fourth Proportional to 1,299,188,630.10, 1,948,782,945.15 and 425,818,490.70

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Solution

The fourth proportional to 1,299,188,630.10, 1,948,782,945.15 and 425,818,490.70 is: 638,727,736.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,188,630.10 : 1,948,782,945.15 = 425,818,490.70 : x
  2. Step 2: Convert to fraction form
    1,299,188,630.10/1,948,782,945.15 = 425,818,490.70/x
  3. Step 3: Cross multiply
    1,299,188,630.10x = 1,948,782,945.15 × 425,818,490.70
  4. Step 4: Simplify right side
    1,299,188,630.10x = 829,827,812,405,673,856
  5. Step 5: Solve for x
    x = 829,827,812,405,673,856/1,299,188,630.10
  6. Step 6: Final answer
    x = 638,727,736.05

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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.