Home / 870,935,999.60-1,306,403,999.40-387,206,591.60

Finding the Fourth Proportional to 870,935,999.60, 1,306,403,999.40 and 387,206,591.60

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Solution

The fourth proportional to 870,935,999.60, 1,306,403,999.40 and 387,206,591.60 is: 580,809,887.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,935,999.60 : 1,306,403,999.40 = 387,206,591.60 : x
  2. Step 2: Convert to fraction form
    870,935,999.60/1,306,403,999.40 = 387,206,591.60/x
  3. Step 3: Cross multiply
    870,935,999.60x = 1,306,403,999.40 × 387,206,591.60
  4. Step 4: Simplify right side
    870,935,999.60x = 505,848,239,860,282,496
  5. Step 5: Solve for x
    x = 505,848,239,860,282,496/870,935,999.60
  6. Step 6: Final answer
    x = 580,809,887.40

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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.