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Finding the Fourth Proportional to 645,493.27, 890,672.48 and 358,975.03

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Solution

The fourth proportional to 645,493.27, 890,672.48 and 358,975.03 is: 495,325.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,493.27 : 890,672.48 = 358,975.03 : x
  2. Step 2: Convert to fraction form
    645,493.27/890,672.48 = 358,975.03/x
  3. Step 3: Cross multiply
    645,493.27x = 890,672.48 × 358,975.03
  4. Step 4: Simplify right side
    645,493.27x = 319,729,177,552.77
  5. Step 5: Solve for x
    x = 319,729,177,552.77/645,493.27
  6. Step 6: Final answer
    x = 495,325.35

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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.