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Finding the Fourth Proportional to 891,606.46, 1,230,416.82 and 509,641.42

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Solution

The fourth proportional to 891,606.46, 1,230,416.82 and 509,641.42 is: 703,305.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,606.46 : 1,230,416.82 = 509,641.42 : x
  2. Step 2: Convert to fraction form
    891,606.46/1,230,416.82 = 509,641.42/x
  3. Step 3: Cross multiply
    891,606.46x = 1,230,416.82 × 509,641.42
  4. Step 4: Simplify right side
    891,606.46x = 627,071,375,336.69
  5. Step 5: Solve for x
    x = 627,071,375,336.69/891,606.46
  6. Step 6: Final answer
    x = 703,305.11

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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.