Home / 1,398,454.90-2,097,682.35-640,294.90

Finding the Fourth Proportional to 1,398,454.90, 2,097,682.35 and 640,294.90

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Solution

The fourth proportional to 1,398,454.90, 2,097,682.35 and 640,294.90 is: 960,442.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,454.90 : 2,097,682.35 = 640,294.90 : x
  2. Step 2: Convert to fraction form
    1,398,454.90/2,097,682.35 = 640,294.90/x
  3. Step 3: Cross multiply
    1,398,454.90x = 2,097,682.35 × 640,294.90
  4. Step 4: Simplify right side
    1,398,454.90x = 1,343,135,310,525.02
  5. Step 5: Solve for x
    x = 1,343,135,310,525.02/1,398,454.90
  6. Step 6: Final answer
    x = 960,442.35

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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.