Home / 624,623.61-861,980.87-338,143.70

Finding the Fourth Proportional to 624,623.61, 861,980.87 and 338,143.70

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Solution

The fourth proportional to 624,623.61, 861,980.87 and 338,143.70 is: 466,638.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,623.61 : 861,980.87 = 338,143.70 : x
  2. Step 2: Convert to fraction form
    624,623.61/861,980.87 = 338,143.70/x
  3. Step 3: Cross multiply
    624,623.61x = 861,980.87 × 338,143.70
  4. Step 4: Simplify right side
    624,623.61x = 291,473,397,689.93
  5. Step 5: Solve for x
    x = 291,473,397,689.93/624,623.61
  6. Step 6: Final answer
    x = 466,638.46

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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.