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Finding the Fourth Proportional to 490,411.56, 731,325.69 and 485,927.28

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Solution

The fourth proportional to 490,411.56, 731,325.69 and 485,927.28 is: 724,638.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,411.56 : 731,325.69 = 485,927.28 : x
  2. Step 2: Convert to fraction form
    490,411.56/731,325.69 = 485,927.28/x
  3. Step 3: Cross multiply
    490,411.56x = 731,325.69 × 485,927.28
  4. Step 4: Simplify right side
    490,411.56x = 355,371,103,335.82
  5. Step 5: Solve for x
    x = 355,371,103,335.82/490,411.56
  6. Step 6: Final answer
    x = 724,638.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.