Home / 678,373.60-1,017,560.40-205,009.60

Finding the Fourth Proportional to 678,373.60, 1,017,560.40 and 205,009.60

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Solution

The fourth proportional to 678,373.60, 1,017,560.40 and 205,009.60 is: 307,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,373.60 : 1,017,560.40 = 205,009.60 : x
  2. Step 2: Convert to fraction form
    678,373.60/1,017,560.40 = 205,009.60/x
  3. Step 3: Cross multiply
    678,373.60x = 1,017,560.40 × 205,009.60
  4. Step 4: Simplify right side
    678,373.60x = 208,609,650,579.84
  5. Step 5: Solve for x
    x = 208,609,650,579.84/678,373.60
  6. Step 6: Final answer
    x = 307,514.40

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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.