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Finding the Fourth Proportional to 908,798.76, 1,254,125.52 and 495,339.12

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Solution

The fourth proportional to 908,798.76, 1,254,125.52 and 495,339.12 is: 683,558.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,798.76 : 1,254,125.52 = 495,339.12 : x
  2. Step 2: Convert to fraction form
    908,798.76/1,254,125.52 = 495,339.12/x
  3. Step 3: Cross multiply
    908,798.76x = 1,254,125.52 × 495,339.12
  4. Step 4: Simplify right side
    908,798.76x = 621,217,431,446.34
  5. Step 5: Solve for x
    x = 621,217,431,446.34/908,798.76
  6. Step 6: Final answer
    x = 683,558.85

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Half scale
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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.