Home / 711,386.40-1,067,079.60-379,610.40

Finding the Fourth Proportional to 711,386.40, 1,067,079.60 and 379,610.40

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Solution

The fourth proportional to 711,386.40, 1,067,079.60 and 379,610.40 is: 569,415.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,386.40 : 1,067,079.60 = 379,610.40 : x
  2. Step 2: Convert to fraction form
    711,386.40/1,067,079.60 = 379,610.40/x
  3. Step 3: Cross multiply
    711,386.40x = 1,067,079.60 × 379,610.40
  4. Step 4: Simplify right side
    711,386.40x = 405,074,513,787.84
  5. Step 5: Solve for x
    x = 405,074,513,787.84/711,386.40
  6. Step 6: Final answer
    x = 569,415.60

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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.