Home / 1,078,775.12-1,618,337.64-404,909.12

Finding the Fourth Proportional to 1,078,775.12, 1,618,337.64 and 404,909.12

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Solution

The fourth proportional to 1,078,775.12, 1,618,337.64 and 404,909.12 is: 607,429.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,775.12 : 1,618,337.64 = 404,909.12 : x
  2. Step 2: Convert to fraction form
    1,078,775.12/1,618,337.64 = 404,909.12/x
  3. Step 3: Cross multiply
    1,078,775.12x = 1,618,337.64 × 404,909.12
  4. Step 4: Simplify right side
    1,078,775.12x = 655,279,669,675.28
  5. Step 5: Solve for x
    x = 655,279,669,675.28/1,078,775.12
  6. Step 6: Final answer
    x = 607,429.35

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Double scale
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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.