Home / 857,448.16-1,286,222.73-288,781.72

Finding the Fourth Proportional to 857,448.16, 1,286,222.73 and 288,781.72

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Solution

The fourth proportional to 857,448.16, 1,286,222.73 and 288,781.72 is: 433,189.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,448.16 : 1,286,222.73 = 288,781.72 : x
  2. Step 2: Convert to fraction form
    857,448.16/1,286,222.73 = 288,781.72/x
  3. Step 3: Cross multiply
    857,448.16x = 1,286,222.73 × 288,781.72
  4. Step 4: Simplify right side
    857,448.16x = 371,437,612,272.50
  5. Step 5: Solve for x
    x = 371,437,612,272.50/857,448.16
  6. Step 6: Final answer
    x = 433,189.58

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1.5x scale

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.