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Finding the Fourth Proportional to 610,401.30, 915,601.95 and 311,802.90

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Solution

The fourth proportional to 610,401.30, 915,601.95 and 311,802.90 is: 467,704.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,401.30 : 915,601.95 = 311,802.90 : x
  2. Step 2: Convert to fraction form
    610,401.30/915,601.95 = 311,802.90/x
  3. Step 3: Cross multiply
    610,401.30x = 915,601.95 × 311,802.90
  4. Step 4: Simplify right side
    610,401.30x = 285,487,343,255.66
  5. Step 5: Solve for x
    x = 285,487,343,255.66/610,401.30
  6. Step 6: Final answer
    x = 467,704.35

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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.