Home / 851,488,005.20-1,277,232,007.80-392,322,981.20

Finding the Fourth Proportional to 851,488,005.20, 1,277,232,007.80 and 392,322,981.20

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Solution

The fourth proportional to 851,488,005.20, 1,277,232,007.80 and 392,322,981.20 is: 588,484,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,488,005.20 : 1,277,232,007.80 = 392,322,981.20 : x
  2. Step 2: Convert to fraction form
    851,488,005.20/1,277,232,007.80 = 392,322,981.20/x
  3. Step 3: Cross multiply
    851,488,005.20x = 1,277,232,007.80 × 392,322,981.20
  4. Step 4: Simplify right side
    851,488,005.20x = 501,087,468,984,157,632
  5. Step 5: Solve for x
    x = 501,087,468,984,157,632/851,488,005.20
  6. Step 6: Final answer
    x = 588,484,471.80

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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.