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Finding the Fourth Proportional to 402,863.70, 604,295.55 and 302,480.40

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Solution

The fourth proportional to 402,863.70, 604,295.55 and 302,480.40 is: 453,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,863.70 : 604,295.55 = 302,480.40 : x
  2. Step 2: Convert to fraction form
    402,863.70/604,295.55 = 302,480.40/x
  3. Step 3: Cross multiply
    402,863.70x = 604,295.55 × 302,480.40
  4. Step 4: Simplify right side
    402,863.70x = 182,787,559,682.22
  5. Step 5: Solve for x
    x = 182,787,559,682.22/402,863.70
  6. Step 6: Final answer
    x = 453,720.60

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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.