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Finding the Fourth Proportional to 661,988.40, 993,112.20 and 282,908.40

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Solution

The fourth proportional to 661,988.40, 993,112.20 and 282,908.40 is: 424,417.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,988.40 : 993,112.20 = 282,908.40 : x
  2. Step 2: Convert to fraction form
    661,988.40/993,112.20 = 282,908.40/x
  3. Step 3: Cross multiply
    661,988.40x = 993,112.20 × 282,908.40
  4. Step 4: Simplify right side
    661,988.40x = 280,959,783,522.48
  5. Step 5: Solve for x
    x = 280,959,783,522.48/661,988.40
  6. Step 6: Final answer
    x = 424,417.99

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.