Home / 431,707,859.02-647,416,786.38-140,506,498.90

Finding the Fourth Proportional to 431,707,859.02, 647,416,786.38 and 140,506,498.90

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Solution

The fourth proportional to 431,707,859.02, 647,416,786.38 and 140,506,498.90 is: 210,712,554.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,707,859.02 : 647,416,786.38 = 140,506,498.90 : x
  2. Step 2: Convert to fraction form
    431,707,859.02/647,416,786.38 = 140,506,498.90/x
  3. Step 3: Cross multiply
    431,707,859.02x = 647,416,786.38 × 140,506,498.90
  4. Step 4: Simplify right side
    431,707,859.02x = 90,966,265,983,343,008
  5. Step 5: Solve for x
    x = 90,966,265,983,343,008/431,707,859.02
  6. Step 6: Final answer
    x = 210,712,554.99

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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.