Home / 988,279.10-1,482,418.65-278,330.30

Finding the Fourth Proportional to 988,279.10, 1,482,418.65 and 278,330.30

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Solution

The fourth proportional to 988,279.10, 1,482,418.65 and 278,330.30 is: 417,495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,279.10 : 1,482,418.65 = 278,330.30 : x
  2. Step 2: Convert to fraction form
    988,279.10/1,482,418.65 = 278,330.30/x
  3. Step 3: Cross multiply
    988,279.10x = 1,482,418.65 × 278,330.30
  4. Step 4: Simplify right side
    988,279.10x = 412,602,027,580.10
  5. Step 5: Solve for x
    x = 412,602,027,580.10/988,279.10
  6. Step 6: Final answer
    x = 417,495.45

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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.