Home / 437,570.20-656,501.10-390,536.20

Finding the Fourth Proportional to 437,570.20, 656,501.10 and 390,536.20

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Solution

The fourth proportional to 437,570.20, 656,501.10 and 390,536.20 is: 585,934.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,570.20 : 656,501.10 = 390,536.20 : x
  2. Step 2: Convert to fraction form
    437,570.20/656,501.10 = 390,536.20/x
  3. Step 3: Cross multiply
    437,570.20x = 656,501.10 × 390,536.20
  4. Step 4: Simplify right side
    437,570.20x = 256,387,444,889.82
  5. Step 5: Solve for x
    x = 256,387,444,889.82/437,570.20
  6. Step 6: Final answer
    x = 585,934.43

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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.