Home / 689,829,909.60-1,034,744,864.40-649,015,240.80

Finding the Fourth Proportional to 689,829,909.60, 1,034,744,864.40 and 649,015,240.80

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Solution

The fourth proportional to 689,829,909.60, 1,034,744,864.40 and 649,015,240.80 is: 973,522,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,829,909.60 : 1,034,744,864.40 = 649,015,240.80 : x
  2. Step 2: Convert to fraction form
    689,829,909.60/1,034,744,864.40 = 649,015,240.80/x
  3. Step 3: Cross multiply
    689,829,909.60x = 1,034,744,864.40 × 649,015,240.80
  4. Step 4: Simplify right side
    689,829,909.60x = 671,565,187,335,129,344
  5. Step 5: Solve for x
    x = 671,565,187,335,129,344/689,829,909.60
  6. Step 6: Final answer
    x = 973,522,861.20

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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.