Home / 765,011.34-1,055,715.66-420,852.06

Finding the Fourth Proportional to 765,011.34, 1,055,715.66 and 420,852.06

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Solution

The fourth proportional to 765,011.34, 1,055,715.66 and 420,852.06 is: 580,775.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,011.34 : 1,055,715.66 = 420,852.06 : x
  2. Step 2: Convert to fraction form
    765,011.34/1,055,715.66 = 420,852.06/x
  3. Step 3: Cross multiply
    765,011.34x = 1,055,715.66 × 420,852.06
  4. Step 4: Simplify right side
    765,011.34x = 444,300,110,285.26
  5. Step 5: Solve for x
    x = 444,300,110,285.26/765,011.34
  6. Step 6: Final answer
    x = 580,775.85

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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.