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Finding the Fourth Proportional to 672,900.16, 928,537.68 and 371,074.72

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Solution

The fourth proportional to 672,900.16, 928,537.68 and 371,074.72 is: 512,047.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,900.16 : 928,537.68 = 371,074.72 : x
  2. Step 2: Convert to fraction form
    672,900.16/928,537.68 = 371,074.72/x
  3. Step 3: Cross multiply
    672,900.16x = 928,537.68 × 371,074.72
  4. Step 4: Simplify right side
    672,900.16x = 344,556,859,615.45
  5. Step 5: Solve for x
    x = 344,556,859,615.45/672,900.16
  6. Step 6: Final answer
    x = 512,047.52

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.