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Finding the Fourth Proportional to 908,208.64, 1,253,328 and 526,456.96

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Solution

The fourth proportional to 908,208.64, 1,253,328 and 526,456.96 is: 726,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,208.64 : 1,253,328 = 526,456.96 : x
  2. Step 2: Convert to fraction form
    908,208.64/1,253,328 = 526,456.96/x
  3. Step 3: Cross multiply
    908,208.64x = 1,253,328 × 526,456.96
  4. Step 4: Simplify right side
    908,208.64x = 659,823,248,762.88
  5. Step 5: Solve for x
    x = 659,823,248,762.88/908,208.64
  6. Step 6: Final answer
    x = 726,510.65

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Double scale
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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.