Home / 750,789,909.12-1,126,833,221.44-520,920,418.88

Finding the Fourth Proportional to 750,789,909.12, 1,126,833,221.44 and 520,920,418.88

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Solution

The fourth proportional to 750,789,909.12, 1,126,833,221.44 and 520,920,418.88 is: 781,830,478.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,789,909.12 : 1,126,833,221.44 = 520,920,418.88 : x
  2. Step 2: Convert to fraction form
    750,789,909.12/1,126,833,221.44 = 520,920,418.88/x
  3. Step 3: Cross multiply
    750,789,909.12x = 1,126,833,221.44 × 520,920,418.88
  4. Step 4: Simplify right side
    750,789,909.12x = 586,990,433,720,424,576
  5. Step 5: Solve for x
    x = 586,990,433,720,424,576/750,789,909.12
  6. Step 6: Final answer
    x = 781,830,478.26

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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.