Home / 788,391.72-1,088,138.88-515,988.72

Finding the Fourth Proportional to 788,391.72, 1,088,138.88 and 515,988.72

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Solution

The fourth proportional to 788,391.72, 1,088,138.88 and 515,988.72 is: 712,168.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,391.72 : 1,088,138.88 = 515,988.72 : x
  2. Step 2: Convert to fraction form
    788,391.72/1,088,138.88 = 515,988.72/x
  3. Step 3: Cross multiply
    788,391.72x = 1,088,138.88 × 515,988.72
  4. Step 4: Simplify right side
    788,391.72x = 561,467,387,873.43
  5. Step 5: Solve for x
    x = 561,467,387,873.43/788,391.72
  6. Step 6: Final answer
    x = 712,168.04

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1.5x scale

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.