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Finding the Fourth Proportional to 615,745.50, 849,720 and 343,817.70

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Solution

The fourth proportional to 615,745.50, 849,720 and 343,817.70 is: 474,463.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,745.50 : 849,720 = 343,817.70 : x
  2. Step 2: Convert to fraction form
    615,745.50/849,720 = 343,817.70/x
  3. Step 3: Cross multiply
    615,745.50x = 849,720 × 343,817.70
  4. Step 4: Simplify right side
    615,745.50x = 292,148,776,044
  5. Step 5: Solve for x
    x = 292,148,776,044/615,745.50
  6. Step 6: Final answer
    x = 474,463.52

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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.