Home / 820,710.36-1,230,401.24-315,013.08

Finding the Fourth Proportional to 820,710.36, 1,230,401.24 and 315,013.08

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Solution

The fourth proportional to 820,710.36, 1,230,401.24 and 315,013.08 is: 472,264.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,710.36 : 1,230,401.24 = 315,013.08 : x
  2. Step 2: Convert to fraction form
    820,710.36/1,230,401.24 = 315,013.08/x
  3. Step 3: Cross multiply
    820,710.36x = 1,230,401.24 × 315,013.08
  4. Step 4: Simplify right side
    820,710.36x = 387,592,488,468.46
  5. Step 5: Solve for x
    x = 387,592,488,468.46/820,710.36
  6. Step 6: Final answer
    x = 472,264.65

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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.