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Finding the Fourth Proportional to 604,876.20, 907,314.30 and 415,919.40

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Solution

The fourth proportional to 604,876.20, 907,314.30 and 415,919.40 is: 623,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,876.20 : 907,314.30 = 415,919.40 : x
  2. Step 2: Convert to fraction form
    604,876.20/907,314.30 = 415,919.40/x
  3. Step 3: Cross multiply
    604,876.20x = 907,314.30 × 415,919.40
  4. Step 4: Simplify right side
    604,876.20x = 377,369,619,267.42
  5. Step 5: Solve for x
    x = 377,369,619,267.42/604,876.20
  6. Step 6: Final answer
    x = 623,879.10

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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.