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Finding the Fourth Proportional to 547,010.32, 754,823.08 and 317,506.72

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Solution

The fourth proportional to 547,010.32, 754,823.08 and 317,506.72 is: 438,129.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,010.32 : 754,823.08 = 317,506.72 : x
  2. Step 2: Convert to fraction form
    547,010.32/754,823.08 = 317,506.72/x
  3. Step 3: Cross multiply
    547,010.32x = 754,823.08 × 317,506.72
  4. Step 4: Simplify right side
    547,010.32x = 239,661,400,311.10
  5. Step 5: Solve for x
    x = 239,661,400,311.10/547,010.32
  6. Step 6: Final answer
    x = 438,129.58

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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.