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Finding the Fourth Proportional to 524,042.90, 786,064.35 and 485,551.70

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Solution

The fourth proportional to 524,042.90, 786,064.35 and 485,551.70 is: 728,327.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,042.90 : 786,064.35 = 485,551.70 : x
  2. Step 2: Convert to fraction form
    524,042.90/786,064.35 = 485,551.70/x
  3. Step 3: Cross multiply
    524,042.90x = 786,064.35 × 485,551.70
  4. Step 4: Simplify right side
    524,042.90x = 381,674,881,451.90
  5. Step 5: Solve for x
    x = 381,674,881,451.90/524,042.90
  6. Step 6: Final answer
    x = 728,327.55

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Double scale
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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.