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Finding the Fourth Proportional to 674,240.90, 930,452.40 and 372,434.90

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Solution

The fourth proportional to 674,240.90, 930,452.40 and 372,434.90 is: 513,960.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,240.90 : 930,452.40 = 372,434.90 : x
  2. Step 2: Convert to fraction form
    674,240.90/930,452.40 = 372,434.90/x
  3. Step 3: Cross multiply
    674,240.90x = 930,452.40 × 372,434.90
  4. Step 4: Simplify right side
    674,240.90x = 346,532,946,548.76
  5. Step 5: Solve for x
    x = 346,532,946,548.76/674,240.90
  6. Step 6: Final answer
    x = 513,960.14

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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.