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Finding the Fourth Proportional to 660,513.88, 911,513.82 and 358,707.88

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Solution

The fourth proportional to 660,513.88, 911,513.82 and 358,707.88 is: 495,019.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,513.88 : 911,513.82 = 358,707.88 : x
  2. Step 2: Convert to fraction form
    660,513.88/911,513.82 = 358,707.88/x
  3. Step 3: Cross multiply
    660,513.88x = 911,513.82 × 358,707.88
  4. Step 4: Simplify right side
    660,513.88x = 326,967,189,962.90
  5. Step 5: Solve for x
    x = 326,967,189,962.90/660,513.88
  6. Step 6: Final answer
    x = 495,019.41

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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.