Home / 1,287,587,309.80-1,931,380,964.70-469,726,292.20

Finding the Fourth Proportional to 1,287,587,309.80, 1,931,380,964.70 and 469,726,292.20

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Solution

The fourth proportional to 1,287,587,309.80, 1,931,380,964.70 and 469,726,292.20 is: 704,589,438.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,587,309.80 : 1,931,380,964.70 = 469,726,292.20 : x
  2. Step 2: Convert to fraction form
    1,287,587,309.80/1,931,380,964.70 = 469,726,292.20/x
  3. Step 3: Cross multiply
    1,287,587,309.80x = 1,931,380,964.70 × 469,726,292.20
  4. Step 4: Simplify right side
    1,287,587,309.80x = 907,220,419,374,190,080
  5. Step 5: Solve for x
    x = 907,220,419,374,190,080/1,287,587,309.80
  6. Step 6: Final answer
    x = 704,589,438.30

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Double scale
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1.5x scale

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.