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Finding the Fourth Proportional to 611,600.47, 916,625.70 and 345,510.91

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Solution

The fourth proportional to 611,600.47, 916,625.70 and 345,510.91 is: 517,828.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,600.47 : 916,625.70 = 345,510.91 : x
  2. Step 2: Convert to fraction form
    611,600.47/916,625.70 = 345,510.91/x
  3. Step 3: Cross multiply
    611,600.47x = 916,625.70 × 345,510.91
  4. Step 4: Simplify right side
    611,600.47x = 316,704,179,736.39
  5. Step 5: Solve for x
    x = 316,704,179,736.39/611,600.47
  6. Step 6: Final answer
    x = 517,828.54

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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.