Home / 885,103.72-1,221,441.32-497,919.40

Finding the Fourth Proportional to 885,103.72, 1,221,441.32 and 497,919.40

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Solution

The fourth proportional to 885,103.72, 1,221,441.32 and 497,919.40 is: 687,127.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,103.72 : 1,221,441.32 = 497,919.40 : x
  2. Step 2: Convert to fraction form
    885,103.72/1,221,441.32 = 497,919.40/x
  3. Step 3: Cross multiply
    885,103.72x = 1,221,441.32 × 497,919.40
  4. Step 4: Simplify right side
    885,103.72x = 608,179,327,380.80
  5. Step 5: Solve for x
    x = 608,179,327,380.80/885,103.72
  6. Step 6: Final answer
    x = 687,127.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.