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Finding the Fourth Proportional to 662,123.54, 993,089.72 and 212,785.76

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Solution

The fourth proportional to 662,123.54, 993,089.72 and 212,785.76 is: 319,147.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,123.54 : 993,089.72 = 212,785.76 : x
  2. Step 2: Convert to fraction form
    662,123.54/993,089.72 = 212,785.76/x
  3. Step 3: Cross multiply
    662,123.54x = 993,089.72 × 212,785.76
  4. Step 4: Simplify right side
    662,123.54x = 211,315,349,754.46
  5. Step 5: Solve for x
    x = 211,315,349,754.46/662,123.54
  6. Step 6: Final answer
    x = 319,147.92

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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.