Home / 778,840.52-1,074,799.86-421,144.52

Finding the Fourth Proportional to 778,840.52, 1,074,799.86 and 421,144.52

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Solution

The fourth proportional to 778,840.52, 1,074,799.86 and 421,144.52 is: 581,179.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,840.52 : 1,074,799.86 = 421,144.52 : x
  2. Step 2: Convert to fraction form
    778,840.52/1,074,799.86 = 421,144.52/x
  3. Step 3: Cross multiply
    778,840.52x = 1,074,799.86 × 421,144.52
  4. Step 4: Simplify right side
    778,840.52x = 452,646,071,135.77
  5. Step 5: Solve for x
    x = 452,646,071,135.77/778,840.52
  6. Step 6: Final answer
    x = 581,179.41

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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.