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Finding the Fourth Proportional to 537,990.12, 742,411.62 and 308,585.88

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Solution

The fourth proportional to 537,990.12, 742,411.62 and 308,585.88 is: 425,840.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,990.12 : 742,411.62 = 308,585.88 : x
  2. Step 2: Convert to fraction form
    537,990.12/742,411.62 = 308,585.88/x
  3. Step 3: Cross multiply
    537,990.12x = 742,411.62 × 308,585.88
  4. Step 4: Simplify right side
    537,990.12x = 229,097,743,079.93
  5. Step 5: Solve for x
    x = 229,097,743,079.93/537,990.12
  6. Step 6: Final answer
    x = 425,840.06

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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.