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Finding the Fourth Proportional to 672,700.20, 928,321.70 and 370,894.20

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Solution

The fourth proportional to 672,700.20, 928,321.70 and 370,894.20 is: 511,831.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,700.20 : 928,321.70 = 370,894.20 : x
  2. Step 2: Convert to fraction form
    672,700.20/928,321.70 = 370,894.20/x
  3. Step 3: Cross multiply
    672,700.20x = 928,321.70 × 370,894.20
  4. Step 4: Simplify right side
    672,700.20x = 344,309,134,264.14
  5. Step 5: Solve for x
    x = 344,309,134,264.14/672,700.20
  6. Step 6: Final answer
    x = 511,831.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.