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Finding the Fourth Proportional to 612,210.30, 918,315.45 and 413,144.70

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Solution

The fourth proportional to 612,210.30, 918,315.45 and 413,144.70 is: 619,717.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,210.30 : 918,315.45 = 413,144.70 : x
  2. Step 2: Convert to fraction form
    612,210.30/918,315.45 = 413,144.70/x
  3. Step 3: Cross multiply
    612,210.30x = 918,315.45 × 413,144.70
  4. Step 4: Simplify right side
    612,210.30x = 379,397,161,095.62
  5. Step 5: Solve for x
    x = 379,397,161,095.62/612,210.30
  6. Step 6: Final answer
    x = 619,717.05

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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.