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Finding the Fourth Proportional to 661,238.90, 912,510.27 and 359,432.90

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Solution

The fourth proportional to 661,238.90, 912,510.27 and 359,432.90 is: 496,017.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,238.90 : 912,510.27 = 359,432.90 : x
  2. Step 2: Convert to fraction form
    661,238.90/912,510.27 = 359,432.90/x
  3. Step 3: Cross multiply
    661,238.90x = 912,510.27 × 359,432.90
  4. Step 4: Simplify right side
    661,238.90x = 327,986,212,625.88
  5. Step 5: Solve for x
    x = 327,986,212,625.88/661,238.90
  6. Step 6: Final answer
    x = 496,017.72

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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.