Home / 791,478,015.40-1,187,217,023.10-664,499,045.80

Finding the Fourth Proportional to 791,478,015.40, 1,187,217,023.10 and 664,499,045.80

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Solution

The fourth proportional to 791,478,015.40, 1,187,217,023.10 and 664,499,045.80 is: 996,748,568.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,478,015.40 : 1,187,217,023.10 = 664,499,045.80 : x
  2. Step 2: Convert to fraction form
    791,478,015.40/1,187,217,023.10 = 664,499,045.80/x
  3. Step 3: Cross multiply
    791,478,015.40x = 1,187,217,023.10 × 664,499,045.80
  4. Step 4: Simplify right side
    791,478,015.40x = 788,904,579,007,466,496
  5. Step 5: Solve for x
    x = 788,904,579,007,466,496/791,478,015.40
  6. Step 6: Final answer
    x = 996,748,568.70

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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.