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Finding the Fourth Proportional to 661,122.36, 912,344.58 and 359,316.36

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Solution

The fourth proportional to 661,122.36, 912,344.58 and 359,316.36 is: 495,854.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,122.36 : 912,344.58 = 359,316.36 : x
  2. Step 2: Convert to fraction form
    661,122.36/912,344.58 = 359,316.36/x
  3. Step 3: Cross multiply
    661,122.36x = 912,344.58 × 359,316.36
  4. Step 4: Simplify right side
    661,122.36x = 327,820,333,551.33
  5. Step 5: Solve for x
    x = 327,820,333,551.33/661,122.36
  6. Step 6: Final answer
    x = 495,854.25

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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.