Home / 1,278,512.28-1,918,080.72-425,582.28

Finding the Fourth Proportional to 1,278,512.28, 1,918,080.72 and 425,582.28

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Solution

The fourth proportional to 1,278,512.28, 1,918,080.72 and 425,582.28 is: 638,477.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,512.28 : 1,918,080.72 = 425,582.28 : x
  2. Step 2: Convert to fraction form
    1,278,512.28/1,918,080.72 = 425,582.28/x
  3. Step 3: Cross multiply
    1,278,512.28x = 1,918,080.72 × 425,582.28
  4. Step 4: Simplify right side
    1,278,512.28x = 816,301,166,041.64
  5. Step 5: Solve for x
    x = 816,301,166,041.64/1,278,512.28
  6. Step 6: Final answer
    x = 638,477.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.