Home / 824,488.80-1,236,013.20-319,394.40

Finding the Fourth Proportional to 824,488.80, 1,236,013.20 and 319,394.40

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Solution

The fourth proportional to 824,488.80, 1,236,013.20 and 319,394.40 is: 478,812.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,488.80 : 1,236,013.20 = 319,394.40 : x
  2. Step 2: Convert to fraction form
    824,488.80/1,236,013.20 = 319,394.40/x
  3. Step 3: Cross multiply
    824,488.80x = 1,236,013.20 × 319,394.40
  4. Step 4: Simplify right side
    824,488.80x = 394,775,694,406.08
  5. Step 5: Solve for x
    x = 394,775,694,406.08/824,488.80
  6. Step 6: Final answer
    x = 478,812.68

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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.