Home / 820,500.48-1,132,288.20-457,920.36

Finding the Fourth Proportional to 820,500.48, 1,132,288.20 and 457,920.36

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Solution

The fourth proportional to 820,500.48, 1,132,288.20 and 457,920.36 is: 631,928.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,500.48 : 1,132,288.20 = 457,920.36 : x
  2. Step 2: Convert to fraction form
    820,500.48/1,132,288.20 = 457,920.36/x
  3. Step 3: Cross multiply
    820,500.48x = 1,132,288.20 × 457,920.36
  4. Step 4: Simplify right side
    820,500.48x = 518,497,820,167.75
  5. Step 5: Solve for x
    x = 518,497,820,167.75/820,500.48
  6. Step 6: Final answer
    x = 631,928.72

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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.