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Finding the Fourth Proportional to 378,763.93, 523,387.13 and 360,312.94

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Solution

The fourth proportional to 378,763.93, 523,387.13 and 360,312.94 is: 497,891.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,763.93 : 523,387.13 = 360,312.94 : x
  2. Step 2: Convert to fraction form
    378,763.93/523,387.13 = 360,312.94/x
  3. Step 3: Cross multiply
    378,763.93x = 523,387.13 × 360,312.94
  4. Step 4: Simplify right side
    378,763.93x = 188,583,155,568.46
  5. Step 5: Solve for x
    x = 188,583,155,568.46/378,763.93
  6. Step 6: Final answer
    x = 497,891.01

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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.