Home / 824,428.80-1,235,923.20-319,334.40

Finding the Fourth Proportional to 824,428.80, 1,235,923.20 and 319,334.40

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Solution

The fourth proportional to 824,428.80, 1,235,923.20 and 319,334.40 is: 478,722.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,428.80 : 1,235,923.20 = 319,334.40 : x
  2. Step 2: Convert to fraction form
    824,428.80/1,235,923.20 = 319,334.40/x
  3. Step 3: Cross multiply
    824,428.80x = 1,235,923.20 × 319,334.40
  4. Step 4: Simplify right side
    824,428.80x = 394,672,793,518.08
  5. Step 5: Solve for x
    x = 394,672,793,518.08/824,428.80
  6. Step 6: Final answer
    x = 478,722.72

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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.