Home / 811,020,909.60-1,214,142,577.20-763,776,007.20

Finding the Fourth Proportional to 811,020,909.60, 1,214,142,577.20 and 763,776,007.20

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Solution

The fourth proportional to 811,020,909.60, 1,214,142,577.20 and 763,776,007.20 is: 1,143,414,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,020,909.60 : 1,214,142,577.20 = 763,776,007.20 : x
  2. Step 2: Convert to fraction form
    811,020,909.60/1,214,142,577.20 = 763,776,007.20/x
  3. Step 3: Cross multiply
    811,020,909.60x = 1,214,142,577.20 × 763,776,007.20
  4. Step 4: Simplify right side
    811,020,909.60x = 927,332,969,785,333,888
  5. Step 5: Solve for x
    x = 927,332,969,785,333,888/811,020,909.60
  6. Step 6: Final answer
    x = 1,143,414,379.10

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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.