Home / 748,938.80-1,123,408.20-508,401.20

Finding the Fourth Proportional to 748,938.80, 1,123,408.20 and 508,401.20

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Solution

The fourth proportional to 748,938.80, 1,123,408.20 and 508,401.20 is: 762,601.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,938.80 : 1,123,408.20 = 508,401.20 : x
  2. Step 2: Convert to fraction form
    748,938.80/1,123,408.20 = 508,401.20/x
  3. Step 3: Cross multiply
    748,938.80x = 1,123,408.20 × 508,401.20
  4. Step 4: Simplify right side
    748,938.80x = 571,142,076,969.84
  5. Step 5: Solve for x
    x = 571,142,076,969.84/748,938.80
  6. Step 6: Final answer
    x = 762,601.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.