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Finding the Fourth Proportional to 660,697.71, 911,738.48 and 358,885.23

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Solution

The fourth proportional to 660,697.71, 911,738.48 and 358,885.23 is: 495,248.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,697.71 : 911,738.48 = 358,885.23 : x
  2. Step 2: Convert to fraction form
    660,697.71/911,738.48 = 358,885.23/x
  3. Step 3: Cross multiply
    660,697.71x = 911,738.48 × 358,885.23
  4. Step 4: Simplify right side
    660,697.71x = 327,209,472,300.22
  5. Step 5: Solve for x
    x = 327,209,472,300.22/660,697.71
  6. Step 6: Final answer
    x = 495,248.38

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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.