Home / 1,299,188,630.60-1,948,782,945.90-425,818,491.20

Finding the Fourth Proportional to 1,299,188,630.60, 1,948,782,945.90 and 425,818,491.20

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Solution

The fourth proportional to 1,299,188,630.60, 1,948,782,945.90 and 425,818,491.20 is: 638,727,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,188,630.60 : 1,948,782,945.90 = 425,818,491.20 : x
  2. Step 2: Convert to fraction form
    1,299,188,630.60/1,948,782,945.90 = 425,818,491.20/x
  3. Step 3: Cross multiply
    1,299,188,630.60x = 1,948,782,945.90 × 425,818,491.20
  4. Step 4: Simplify right side
    1,299,188,630.60x = 829,827,813,699,429,248
  5. Step 5: Solve for x
    x = 829,827,813,699,429,248/1,299,188,630.60
  6. Step 6: Final answer
    x = 638,727,736.80

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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.