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Finding the Fourth Proportional to 518,767.20, 776,422.80 and 376,207.20

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Solution

The fourth proportional to 518,767.20, 776,422.80 and 376,207.20 is: 563,057.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,767.20 : 776,422.80 = 376,207.20 : x
  2. Step 2: Convert to fraction form
    518,767.20/776,422.80 = 376,207.20/x
  3. Step 3: Cross multiply
    518,767.20x = 776,422.80 × 376,207.20
  4. Step 4: Simplify right side
    518,767.20x = 292,095,847,604.16
  5. Step 5: Solve for x
    x = 292,095,847,604.16/518,767.20
  6. Step 6: Final answer
    x = 563,057.66

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1.5x scale

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.