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Finding the Fourth Proportional to 660,910.32, 912,061.80 and 359,104.32

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Solution

The fourth proportional to 660,910.32, 912,061.80 and 359,104.32 is: 495,566.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,910.32 : 912,061.80 = 359,104.32 : x
  2. Step 2: Convert to fraction form
    660,910.32/912,061.80 = 359,104.32/x
  3. Step 3: Cross multiply
    660,910.32x = 912,061.80 × 359,104.32
  4. Step 4: Simplify right side
    660,910.32x = 327,525,332,486.98
  5. Step 5: Solve for x
    x = 327,525,332,486.98/660,910.32
  6. Step 6: Final answer
    x = 495,566.98

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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.