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Finding the Fourth Proportional to 557,010.84, 768,693.27 and 315,288.22

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Solution

The fourth proportional to 557,010.84, 768,693.27 and 315,288.22 is: 435,108.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,010.84 : 768,693.27 = 315,288.22 : x
  2. Step 2: Convert to fraction form
    557,010.84/768,693.27 = 315,288.22/x
  3. Step 3: Cross multiply
    557,010.84x = 768,693.27 × 315,288.22
  4. Step 4: Simplify right side
    557,010.84x = 242,359,932,824.28
  5. Step 5: Solve for x
    x = 242,359,932,824.28/557,010.84
  6. Step 6: Final answer
    x = 435,108.11

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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.