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Finding the Fourth Proportional to 720,001.20, 1,080,001.80 and 654,682.80

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Solution

The fourth proportional to 720,001.20, 1,080,001.80 and 654,682.80 is: 982,024.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,001.20 : 1,080,001.80 = 654,682.80 : x
  2. Step 2: Convert to fraction form
    720,001.20/1,080,001.80 = 654,682.80/x
  3. Step 3: Cross multiply
    720,001.20x = 1,080,001.80 × 654,682.80
  4. Step 4: Simplify right side
    720,001.20x = 707,058,602,429.04
  5. Step 5: Solve for x
    x = 707,058,602,429.04/720,001.20
  6. Step 6: Final answer
    x = 982,024.20

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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.