Home / 763,279.63-1,053,278.73-419,114.20

Finding the Fourth Proportional to 763,279.63, 1,053,278.73 and 419,114.20

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Solution

The fourth proportional to 763,279.63, 1,053,278.73 and 419,114.20 is: 578,351.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,279.63 : 1,053,278.73 = 419,114.20 : x
  2. Step 2: Convert to fraction form
    763,279.63/1,053,278.73 = 419,114.20/x
  3. Step 3: Cross multiply
    763,279.63x = 1,053,278.73 × 419,114.20
  4. Step 4: Simplify right side
    763,279.63x = 441,444,072,300.97
  5. Step 5: Solve for x
    x = 441,444,072,300.97/763,279.63
  6. Step 6: Final answer
    x = 578,351.70

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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.