Home / 765,340.79-1,147,009.21-315,538.07

Finding the Fourth Proportional to 765,340.79, 1,147,009.21 and 315,538.07

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Solution

The fourth proportional to 765,340.79, 1,147,009.21 and 315,538.07 is: 472,894.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,340.79 : 1,147,009.21 = 315,538.07 : x
  2. Step 2: Convert to fraction form
    765,340.79/1,147,009.21 = 315,538.07/x
  3. Step 3: Cross multiply
    765,340.79x = 1,147,009.21 × 315,538.07
  4. Step 4: Simplify right side
    765,340.79x = 361,925,065,871.73
  5. Step 5: Solve for x
    x = 361,925,065,871.73/765,340.79
  6. Step 6: Final answer
    x = 472,894.00

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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.