Home / 1,520,689.80-2,281,034.70-398,872.20

Finding the Fourth Proportional to 1,520,689.80, 2,281,034.70 and 398,872.20

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Solution

The fourth proportional to 1,520,689.80, 2,281,034.70 and 398,872.20 is: 598,308.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520,689.80 : 2,281,034.70 = 398,872.20 : x
  2. Step 2: Convert to fraction form
    1,520,689.80/2,281,034.70 = 398,872.20/x
  3. Step 3: Cross multiply
    1,520,689.80x = 2,281,034.70 × 398,872.20
  4. Step 4: Simplify right side
    1,520,689.80x = 909,841,329,065.34
  5. Step 5: Solve for x
    x = 909,841,329,065.34/1,520,689.80
  6. Step 6: Final answer
    x = 598,308.30

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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.