Home / 852,368,899.20-1,278,553,348.80-307,128,220.80

Finding the Fourth Proportional to 852,368,899.20, 1,278,553,348.80 and 307,128,220.80

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Solution

The fourth proportional to 852,368,899.20, 1,278,553,348.80 and 307,128,220.80 is: 460,692,331.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,368,899.20 : 1,278,553,348.80 = 307,128,220.80 : x
  2. Step 2: Convert to fraction form
    852,368,899.20/1,278,553,348.80 = 307,128,220.80/x
  3. Step 3: Cross multiply
    852,368,899.20x = 1,278,553,348.80 × 307,128,220.80
  4. Step 4: Simplify right side
    852,368,899.20x = 392,679,815,214,825,792
  5. Step 5: Solve for x
    x = 392,679,815,214,825,792/852,368,899.20
  6. Step 6: Final answer
    x = 460,692,331.20

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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.