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Finding the Fourth Proportional to 720,848.76, 994,731.04 and 398,540.04

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Solution

The fourth proportional to 720,848.76, 994,731.04 and 398,540.04 is: 549,963.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,848.76 : 994,731.04 = 398,540.04 : x
  2. Step 2: Convert to fraction form
    720,848.76/994,731.04 = 398,540.04/x
  3. Step 3: Cross multiply
    720,848.76x = 994,731.04 × 398,540.04
  4. Step 4: Simplify right side
    720,848.76x = 396,440,148,470.84
  5. Step 5: Solve for x
    x = 396,440,148,470.84/720,848.76
  6. Step 6: Final answer
    x = 549,963.00

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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.