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Finding the Fourth Proportional to 674,855.41, 931,311.53 and 402,947.06

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Solution

The fourth proportional to 674,855.41, 931,311.53 and 402,947.06 is: 556,073.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,855.41 : 931,311.53 = 402,947.06 : x
  2. Step 2: Convert to fraction form
    674,855.41/931,311.53 = 402,947.06/x
  3. Step 3: Cross multiply
    674,855.41x = 931,311.53 × 402,947.06
  4. Step 4: Simplify right side
    674,855.41x = 375,269,240,942.87
  5. Step 5: Solve for x
    x = 375,269,240,942.87/674,855.41
  6. Step 6: Final answer
    x = 556,073.55

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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.