Home / 870,919,781.40-1,306,379,672.10-325,590,456.60

Finding the Fourth Proportional to 870,919,781.40, 1,306,379,672.10 and 325,590,456.60

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Solution

The fourth proportional to 870,919,781.40, 1,306,379,672.10 and 325,590,456.60 is: 488,385,684.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,919,781.40 : 1,306,379,672.10 = 325,590,456.60 : x
  2. Step 2: Convert to fraction form
    870,919,781.40/1,306,379,672.10 = 325,590,456.60/x
  3. Step 3: Cross multiply
    870,919,781.40x = 1,306,379,672.10 × 325,590,456.60
  4. Step 4: Simplify right side
    870,919,781.40x = 425,344,753,931,997,312
  5. Step 5: Solve for x
    x = 425,344,753,931,997,312/870,919,781.40
  6. Step 6: Final answer
    x = 488,385,684.90

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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.