Home / 791,478,002.40-1,187,217,003.60-664,499,032.80

Finding the Fourth Proportional to 791,478,002.40, 1,187,217,003.60 and 664,499,032.80

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Solution

The fourth proportional to 791,478,002.40, 1,187,217,003.60 and 664,499,032.80 is: 996,748,549.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,478,002.40 : 1,187,217,003.60 = 664,499,032.80 : x
  2. Step 2: Convert to fraction form
    791,478,002.40/1,187,217,003.60 = 664,499,032.80/x
  3. Step 3: Cross multiply
    791,478,002.40x = 1,187,217,003.60 × 664,499,032.80
  4. Step 4: Simplify right side
    791,478,002.40x = 788,904,550,615,913,984
  5. Step 5: Solve for x
    x = 788,904,550,615,913,984/791,478,002.40
  6. Step 6: Final answer
    x = 996,748,549.20

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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.