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Finding the Fourth Proportional to 624,228.35, 861,342.76 and 379,085.63

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Solution

The fourth proportional to 624,228.35, 861,342.76 and 379,085.63 is: 523,082.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,228.35 : 861,342.76 = 379,085.63 : x
  2. Step 2: Convert to fraction form
    624,228.35/861,342.76 = 379,085.63/x
  3. Step 3: Cross multiply
    624,228.35x = 861,342.76 × 379,085.63
  4. Step 4: Simplify right side
    624,228.35x = 326,522,657,566.11
  5. Step 5: Solve for x
    x = 326,522,657,566.11/624,228.35
  6. Step 6: Final answer
    x = 523,082.07

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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.