Home / 748,903.70-1,123,355.55-328,999.70

Finding the Fourth Proportional to 748,903.70, 1,123,355.55 and 328,999.70

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Solution

The fourth proportional to 748,903.70, 1,123,355.55 and 328,999.70 is: 493,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,903.70 : 1,123,355.55 = 328,999.70 : x
  2. Step 2: Convert to fraction form
    748,903.70/1,123,355.55 = 328,999.70/x
  3. Step 3: Cross multiply
    748,903.70x = 1,123,355.55 × 328,999.70
  4. Step 4: Simplify right side
    748,903.70x = 369,583,638,943.34
  5. Step 5: Solve for x
    x = 369,583,638,943.34/748,903.70
  6. Step 6: Final answer
    x = 493,499.55

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Half scale
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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.