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Finding the Fourth Proportional to 662,420, 914,141.76 and 360,616.16

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Solution

The fourth proportional to 662,420, 914,141.76 and 360,616.16 is: 497,651.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,420 : 914,141.76 = 360,616.16 : x
  2. Step 2: Convert to fraction form
    662,420/914,141.76 = 360,616.16/x
  3. Step 3: Cross multiply
    662,420x = 914,141.76 × 360,616.16
  4. Step 4: Simplify right side
    662,420x = 329,654,291,186.84
  5. Step 5: Solve for x
    x = 329,654,291,186.84/662,420
  6. Step 6: Final answer
    x = 497,651.48

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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.