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Finding the Fourth Proportional to 714,699.59, 986,282.57 and 408,775.55

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Solution

The fourth proportional to 714,699.59, 986,282.57 and 408,775.55 is: 564,108.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,699.59 : 986,282.57 = 408,775.55 : x
  2. Step 2: Convert to fraction form
    714,699.59/986,282.57 = 408,775.55/x
  3. Step 3: Cross multiply
    714,699.59x = 986,282.57 × 408,775.55
  4. Step 4: Simplify right side
    714,699.59x = 403,168,200,007.16
  5. Step 5: Solve for x
    x = 403,168,200,007.16/714,699.59
  6. Step 6: Final answer
    x = 564,108.62

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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.