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Finding the Fourth Proportional to 663,606.70, 915,737.79 and 377,087.02

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Solution

The fourth proportional to 663,606.70, 915,737.79 and 377,087.02 is: 520,357.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,606.70 : 915,737.79 = 377,087.02 : x
  2. Step 2: Convert to fraction form
    663,606.70/915,737.79 = 377,087.02/x
  3. Step 3: Cross multiply
    663,606.70x = 915,737.79 × 377,087.02
  4. Step 4: Simplify right side
    663,606.70x = 345,312,834,332.49
  5. Step 5: Solve for x
    x = 345,312,834,332.49/663,606.70
  6. Step 6: Final answer
    x = 520,357.67

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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.