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Finding the Fourth Proportional to 612,381.24, 845,038.25 and 340,432.59

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Solution

The fourth proportional to 612,381.24, 845,038.25 and 340,432.59 is: 469,770.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,381.24 : 845,038.25 = 340,432.59 : x
  2. Step 2: Convert to fraction form
    612,381.24/845,038.25 = 340,432.59/x
  3. Step 3: Cross multiply
    612,381.24x = 845,038.25 × 340,432.59
  4. Step 4: Simplify right side
    612,381.24x = 287,678,560,096.57
  5. Step 5: Solve for x
    x = 287,678,560,096.57/612,381.24
  6. Step 6: Final answer
    x = 469,770.37

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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.