Home / 820,017.36-1,131,625.80-457,432.20

Finding the Fourth Proportional to 820,017.36, 1,131,625.80 and 457,432.20

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Solution

The fourth proportional to 820,017.36, 1,131,625.80 and 457,432.20 is: 631,257.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,017.36 : 1,131,625.80 = 457,432.20 : x
  2. Step 2: Convert to fraction form
    820,017.36/1,131,625.80 = 457,432.20/x
  3. Step 3: Cross multiply
    820,017.36x = 1,131,625.80 × 457,432.20
  4. Step 4: Simplify right side
    820,017.36x = 517,642,079,270.76
  5. Step 5: Solve for x
    x = 517,642,079,270.76/820,017.36
  6. Step 6: Final answer
    x = 631,257.46

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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.