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Finding the Fourth Proportional to 661,120.86, 912,342.51 and 359,314.86

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Solution

The fourth proportional to 661,120.86, 912,342.51 and 359,314.86 is: 495,852.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,120.86 : 912,342.51 = 359,314.86 : x
  2. Step 2: Convert to fraction form
    661,120.86/912,342.51 = 359,314.86/x
  3. Step 3: Cross multiply
    661,120.86x = 912,342.51 × 359,314.86
  4. Step 4: Simplify right side
    661,120.86x = 327,818,221,252.70
  5. Step 5: Solve for x
    x = 327,818,221,252.70/661,120.86
  6. Step 6: Final answer
    x = 495,852.18

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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.