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Finding the Fourth Proportional to 608,078.30, 912,117.45 and 356,135.90

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Solution

The fourth proportional to 608,078.30, 912,117.45 and 356,135.90 is: 534,203.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,078.30 : 912,117.45 = 356,135.90 : x
  2. Step 2: Convert to fraction form
    608,078.30/912,117.45 = 356,135.90/x
  3. Step 3: Cross multiply
    608,078.30x = 912,117.45 × 356,135.90
  4. Step 4: Simplify right side
    608,078.30x = 324,837,768,961.46
  5. Step 5: Solve for x
    x = 324,837,768,961.46/608,078.30
  6. Step 6: Final answer
    x = 534,203.85

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