Home / 910,938.70-1,366,408.05-319,962.70

Finding the Fourth Proportional to 910,938.70, 1,366,408.05 and 319,962.70

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Solution

The fourth proportional to 910,938.70, 1,366,408.05 and 319,962.70 is: 479,944.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,938.70 : 1,366,408.05 = 319,962.70 : x
  2. Step 2: Convert to fraction form
    910,938.70/1,366,408.05 = 319,962.70/x
  3. Step 3: Cross multiply
    910,938.70x = 1,366,408.05 × 319,962.70
  4. Step 4: Simplify right side
    910,938.70x = 437,199,608,979.74
  5. Step 5: Solve for x
    x = 437,199,608,979.74/910,938.70
  6. Step 6: Final answer
    x = 479,944.05

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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.