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Finding the Fourth Proportional to 518,035.92, 714,878.79 and 288,592.89

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Solution

The fourth proportional to 518,035.92, 714,878.79 and 288,592.89 is: 398,252.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,035.92 : 714,878.79 = 288,592.89 : x
  2. Step 2: Convert to fraction form
    518,035.92/714,878.79 = 288,592.89/x
  3. Step 3: Cross multiply
    518,035.92x = 714,878.79 × 288,592.89
  4. Step 4: Simplify right side
    518,035.92x = 206,308,932,431.41
  5. Step 5: Solve for x
    x = 206,308,932,431.41/518,035.92
  6. Step 6: Final answer
    x = 398,252.18

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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.