Home / 932,685,862.80-1,399,512,983.72-380,393,479.92

Finding the Fourth Proportional to 932,685,862.80, 1,399,512,983.72 and 380,393,479.92

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Solution

The fourth proportional to 932,685,862.80, 1,399,512,983.72 and 380,393,479.92 is: 570,787,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    932,685,862.80 : 1,399,512,983.72 = 380,393,479.92 : x
  2. Step 2: Convert to fraction form
    932,685,862.80/1,399,512,983.72 = 380,393,479.92/x
  3. Step 3: Cross multiply
    932,685,862.80x = 1,399,512,983.72 × 380,393,479.92
  4. Step 4: Simplify right side
    932,685,862.80x = 532,365,614,070,473,152
  5. Step 5: Solve for x
    x = 532,365,614,070,473,152/932,685,862.80
  6. Step 6: Final answer
    x = 570,787,695.30

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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.