Home / 431,001.60-646,502.40-298,291.20

Finding the Fourth Proportional to 431,001.60, 646,502.40 and 298,291.20

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Solution

The fourth proportional to 431,001.60, 646,502.40 and 298,291.20 is: 447,436.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,001.60 : 646,502.40 = 298,291.20 : x
  2. Step 2: Convert to fraction form
    431,001.60/646,502.40 = 298,291.20/x
  3. Step 3: Cross multiply
    431,001.60x = 646,502.40 × 298,291.20
  4. Step 4: Simplify right side
    431,001.60x = 192,845,976,698.88
  5. Step 5: Solve for x
    x = 192,845,976,698.88/431,001.60
  6. Step 6: Final answer
    x = 447,436.80

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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.