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Finding the Fourth Proportional to 713,339.40, 1,070,009.10 and 239,867.40

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Solution

The fourth proportional to 713,339.40, 1,070,009.10 and 239,867.40 is: 359,801.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,339.40 : 1,070,009.10 = 239,867.40 : x
  2. Step 2: Convert to fraction form
    713,339.40/1,070,009.10 = 239,867.40/x
  3. Step 3: Cross multiply
    713,339.40x = 1,070,009.10 × 239,867.40
  4. Step 4: Simplify right side
    713,339.40x = 256,660,300,793.34
  5. Step 5: Solve for x
    x = 256,660,300,793.34/713,339.40
  6. Step 6: Final answer
    x = 359,801.10

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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.