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Finding the Fourth Proportional to 581,479.16, 872,207.78 and 316,923.21

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Solution

The fourth proportional to 581,479.16, 872,207.78 and 316,923.21 is: 475,378.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,479.16 : 872,207.78 = 316,923.21 : x
  2. Step 2: Convert to fraction form
    581,479.16/872,207.78 = 316,923.21/x
  3. Step 3: Cross multiply
    581,479.16x = 872,207.78 × 316,923.21
  4. Step 4: Simplify right side
    581,479.16x = 276,422,887,839.96
  5. Step 5: Solve for x
    x = 276,422,887,839.96/581,479.16
  6. Step 6: Final answer
    x = 475,378.84

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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.