Home / 713,138.20-1,069,707.30-678,146.20

Finding the Fourth Proportional to 713,138.20, 1,069,707.30 and 678,146.20

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Solution

The fourth proportional to 713,138.20, 1,069,707.30 and 678,146.20 is: 1,017,219.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,138.20 : 1,069,707.30 = 678,146.20 : x
  2. Step 2: Convert to fraction form
    713,138.20/1,069,707.30 = 678,146.20/x
  3. Step 3: Cross multiply
    713,138.20x = 1,069,707.30 × 678,146.20
  4. Step 4: Simplify right side
    713,138.20x = 725,417,940,607.26
  5. Step 5: Solve for x
    x = 725,417,940,607.26/713,138.20
  6. Step 6: Final answer
    x = 1,017,219.30

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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.