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Finding the Fourth Proportional to 660,948.82, 912,115.14 and 359,142.82

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Solution

The fourth proportional to 660,948.82, 912,115.14 and 359,142.82 is: 495,620.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,948.82 : 912,115.14 = 359,142.82 : x
  2. Step 2: Convert to fraction form
    660,948.82/912,115.14 = 359,142.82/x
  3. Step 3: Cross multiply
    660,948.82x = 912,115.14 × 359,142.82
  4. Step 4: Simplify right side
    660,948.82x = 327,579,603,544.30
  5. Step 5: Solve for x
    x = 327,579,603,544.30/660,948.82
  6. Step 6: Final answer
    x = 495,620.23

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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.