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Finding the Fourth Proportional to 611,001.76, 843,144.30 and 369,141.40

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Solution

The fourth proportional to 611,001.76, 843,144.30 and 369,141.40 is: 509,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,001.76 : 843,144.30 = 369,141.40 : x
  2. Step 2: Convert to fraction form
    611,001.76/843,144.30 = 369,141.40/x
  3. Step 3: Cross multiply
    611,001.76x = 843,144.30 × 369,141.40
  4. Step 4: Simplify right side
    611,001.76x = 311,239,467,304.02
  5. Step 5: Solve for x
    x = 311,239,467,304.02/611,001.76
  6. Step 6: Final answer
    x = 509,392.10

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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.