Home / 790,894.80-1,091,421.34-428,315.72

Finding the Fourth Proportional to 790,894.80, 1,091,421.34 and 428,315.72

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Solution

The fourth proportional to 790,894.80, 1,091,421.34 and 428,315.72 is: 591,068.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,894.80 : 1,091,421.34 = 428,315.72 : x
  2. Step 2: Convert to fraction form
    790,894.80/1,091,421.34 = 428,315.72/x
  3. Step 3: Cross multiply
    790,894.80x = 1,091,421.34 × 428,315.72
  4. Step 4: Simplify right side
    790,894.80x = 467,472,910,537.57
  5. Step 5: Solve for x
    x = 467,472,910,537.57/790,894.80
  6. Step 6: Final answer
    x = 591,068.38

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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.