Home / 674,490.56-1,011,845.64-315,020.88

Finding the Fourth Proportional to 674,490.56, 1,011,845.64 and 315,020.88

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Solution

The fourth proportional to 674,490.56, 1,011,845.64 and 315,020.88 is: 472,582.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,490.56 : 1,011,845.64 = 315,020.88 : x
  2. Step 2: Convert to fraction form
    674,490.56/1,011,845.64 = 315,020.88/x
  3. Step 3: Cross multiply
    674,490.56x = 1,011,845.64 × 315,020.88
  4. Step 4: Simplify right side
    674,490.56x = 318,752,503,936.96
  5. Step 5: Solve for x
    x = 318,752,503,936.96/674,490.56
  6. Step 6: Final answer
    x = 472,582.60

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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.