Home / 870,970,835.10-1,306,456,252.65-387,241,427.10

Finding the Fourth Proportional to 870,970,835.10, 1,306,456,252.65 and 387,241,427.10

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Solution

The fourth proportional to 870,970,835.10, 1,306,456,252.65 and 387,241,427.10 is: 580,862,140.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,970,835.10 : 1,306,456,252.65 = 387,241,427.10 : x
  2. Step 2: Convert to fraction form
    870,970,835.10/1,306,456,252.65 = 387,241,427.10/x
  3. Step 3: Cross multiply
    870,970,835.10x = 1,306,456,252.65 × 387,241,427.10
  4. Step 4: Simplify right side
    870,970,835.10x = 505,913,983,719,904,256
  5. Step 5: Solve for x
    x = 505,913,983,719,904,256/870,970,835.10
  6. Step 6: Final answer
    x = 580,862,140.65

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Double scale
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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.