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Finding the Fourth Proportional to 620,614.80, 930,047.40 and 383,252.40

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Solution

The fourth proportional to 620,614.80, 930,047.40 and 383,252.40 is: 574,338.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,614.80 : 930,047.40 = 383,252.40 : x
  2. Step 2: Convert to fraction form
    620,614.80/930,047.40 = 383,252.40/x
  3. Step 3: Cross multiply
    620,614.80x = 930,047.40 × 383,252.40
  4. Step 4: Simplify right side
    620,614.80x = 356,442,898,163.76
  5. Step 5: Solve for x
    x = 356,442,898,163.76/620,614.80
  6. Step 6: Final answer
    x = 574,338.38

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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.