Home / 739,725.45-1,108,607.28-379,881.76

Finding the Fourth Proportional to 739,725.45, 1,108,607.28 and 379,881.76

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Solution

The fourth proportional to 739,725.45, 1,108,607.28 and 379,881.76 is: 569,318.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,725.45 : 1,108,607.28 = 379,881.76 : x
  2. Step 2: Convert to fraction form
    739,725.45/1,108,607.28 = 379,881.76/x
  3. Step 3: Cross multiply
    739,725.45x = 1,108,607.28 × 379,881.76
  4. Step 4: Simplify right side
    739,725.45x = 421,139,681,903.70
  5. Step 5: Solve for x
    x = 421,139,681,903.70/739,725.45
  6. Step 6: Final answer
    x = 569,318.90

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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.