Home / 778,887.28-1,074,897.12-439,355.44

Finding the Fourth Proportional to 778,887.28, 1,074,897.12 and 439,355.44

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Solution

The fourth proportional to 778,887.28, 1,074,897.12 and 439,355.44 is: 606,328.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,887.28 : 1,074,897.12 = 439,355.44 : x
  2. Step 2: Convert to fraction form
    778,887.28/1,074,897.12 = 439,355.44/x
  3. Step 3: Cross multiply
    778,887.28x = 1,074,897.12 × 439,355.44
  4. Step 4: Simplify right side
    778,887.28x = 472,261,897,112.33
  5. Step 5: Solve for x
    x = 472,261,897,112.33/778,887.28
  6. Step 6: Final answer
    x = 606,328.94

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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.