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Finding the Fourth Proportional to 618,618.60, 853,764.74 and 346,760.04

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Solution

The fourth proportional to 618,618.60, 853,764.74 and 346,760.04 is: 478,568.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,618.60 : 853,764.74 = 346,760.04 : x
  2. Step 2: Convert to fraction form
    618,618.60/853,764.74 = 346,760.04/x
  3. Step 3: Cross multiply
    618,618.60x = 853,764.74 × 346,760.04
  4. Step 4: Simplify right side
    618,618.60x = 296,051,495,392.99
  5. Step 5: Solve for x
    x = 296,051,495,392.99/618,618.60
  6. Step 6: Final answer
    x = 478,568.69

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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.