Home / 563,911.78-778,220.73-309,272.26

Finding the Fourth Proportional to 563,911.78, 778,220.73 and 309,272.26

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Solution

The fourth proportional to 563,911.78, 778,220.73 and 309,272.26 is: 426,808.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,911.78 : 778,220.73 = 309,272.26 : x
  2. Step 2: Convert to fraction form
    563,911.78/778,220.73 = 309,272.26/x
  3. Step 3: Cross multiply
    563,911.78x = 778,220.73 × 309,272.26
  4. Step 4: Simplify right side
    563,911.78x = 240,682,083,945.95
  5. Step 5: Solve for x
    x = 240,682,083,945.95/563,911.78
  6. Step 6: Final answer
    x = 426,808.04

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.