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Finding the Fourth Proportional to 890,754.72, 1,229,318.88 and 488,424.48

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Solution

The fourth proportional to 890,754.72, 1,229,318.88 and 488,424.48 is: 674,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,754.72 : 1,229,318.88 = 488,424.48 : x
  2. Step 2: Convert to fraction form
    890,754.72/1,229,318.88 = 488,424.48/x
  3. Step 3: Cross multiply
    890,754.72x = 1,229,318.88 × 488,424.48
  4. Step 4: Simplify right side
    890,754.72x = 600,429,434,718.18
  5. Step 5: Solve for x
    x = 600,429,434,718.18/890,754.72
  6. Step 6: Final answer
    x = 674,068.20

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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.