Home / 726,761,437.20-1,090,142,155.80-670,641,267.60

Finding the Fourth Proportional to 726,761,437.20, 1,090,142,155.80 and 670,641,267.60

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Solution

The fourth proportional to 726,761,437.20, 1,090,142,155.80 and 670,641,267.60 is: 1,005,961,901.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,761,437.20 : 1,090,142,155.80 = 670,641,267.60 : x
  2. Step 2: Convert to fraction form
    726,761,437.20/1,090,142,155.80 = 670,641,267.60/x
  3. Step 3: Cross multiply
    726,761,437.20x = 1,090,142,155.80 × 670,641,267.60
  4. Step 4: Simplify right side
    726,761,437.20x = 731,094,317,229,908,736
  5. Step 5: Solve for x
    x = 731,094,317,229,908,736/726,761,437.20
  6. Step 6: Final answer
    x = 1,005,961,901.40

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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.