Home / 820,150.18-1,131,840.05-457,605.72

Finding the Fourth Proportional to 820,150.18, 1,131,840.05 and 457,605.72

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Solution

The fourth proportional to 820,150.18, 1,131,840.05 and 457,605.72 is: 631,514.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,150.18 : 1,131,840.05 = 457,605.72 : x
  2. Step 2: Convert to fraction form
    820,150.18/1,131,840.05 = 457,605.72/x
  3. Step 3: Cross multiply
    820,150.18x = 1,131,840.05 × 457,605.72
  4. Step 4: Simplify right side
    820,150.18x = 517,936,478,717.06
  5. Step 5: Solve for x
    x = 517,936,478,717.06/820,150.18
  6. Step 6: Final answer
    x = 631,514.19

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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.