Home / 678,410.10-1,017,615.15-278,918.10

Finding the Fourth Proportional to 678,410.10, 1,017,615.15 and 278,918.10

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Solution

The fourth proportional to 678,410.10, 1,017,615.15 and 278,918.10 is: 418,377.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,410.10 : 1,017,615.15 = 278,918.10 : x
  2. Step 2: Convert to fraction form
    678,410.10/1,017,615.15 = 278,918.10/x
  3. Step 3: Cross multiply
    678,410.10x = 1,017,615.15 × 278,918.10
  4. Step 4: Simplify right side
    678,410.10x = 283,831,284,169.22
  5. Step 5: Solve for x
    x = 283,831,284,169.22/678,410.10
  6. Step 6: Final answer
    x = 418,377.15

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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.