Home / 778,897.64-1,074,879.46-421,201.64

Finding the Fourth Proportional to 778,897.64, 1,074,879.46 and 421,201.64

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Solution

The fourth proportional to 778,897.64, 1,074,879.46 and 421,201.64 is: 581,258.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,897.64 : 1,074,879.46 = 421,201.64 : x
  2. Step 2: Convert to fraction form
    778,897.64/1,074,879.46 = 421,201.64/x
  3. Step 3: Cross multiply
    778,897.64x = 1,074,879.46 × 421,201.64
  4. Step 4: Simplify right side
    778,897.64x = 452,740,991,354.31
  5. Step 5: Solve for x
    x = 452,740,991,354.31/778,897.64
  6. Step 6: Final answer
    x = 581,258.65

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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.