Home / 757,712.20-1,137,086.70-420,752.20

Finding the Fourth Proportional to 757,712.20, 1,137,086.70 and 420,752.20

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Solution

The fourth proportional to 757,712.20, 1,137,086.70 and 420,752.20 is: 631,416.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    757,712.20 : 1,137,086.70 = 420,752.20 : x
  2. Step 2: Convert to fraction form
    757,712.20/1,137,086.70 = 420,752.20/x
  3. Step 3: Cross multiply
    757,712.20x = 1,137,086.70 × 420,752.20
  4. Step 4: Simplify right side
    757,712.20x = 478,431,730,615.74
  5. Step 5: Solve for x
    x = 478,431,730,615.74/757,712.20
  6. Step 6: Final answer
    x = 631,416.16

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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.