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Finding the Fourth Proportional to 671,069.24, 925,722.65 and 398,943.57

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Solution

The fourth proportional to 671,069.24, 925,722.65 and 398,943.57 is: 550,332.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,069.24 : 925,722.65 = 398,943.57 : x
  2. Step 2: Convert to fraction form
    671,069.24/925,722.65 = 398,943.57/x
  3. Step 3: Cross multiply
    671,069.24x = 925,722.65 × 398,943.57
  4. Step 4: Simplify right side
    671,069.24x = 369,311,099,818.22
  5. Step 5: Solve for x
    x = 369,311,099,818.22/671,069.24
  6. Step 6: Final answer
    x = 550,332.34

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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.