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Finding the Fourth Proportional to 672,658.71, 928,226.84 and 385,977.03

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Solution

The fourth proportional to 672,658.71, 928,226.84 and 385,977.03 is: 532,624.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,658.71 : 928,226.84 = 385,977.03 : x
  2. Step 2: Convert to fraction form
    672,658.71/928,226.84 = 385,977.03/x
  3. Step 3: Cross multiply
    672,658.71x = 928,226.84 × 385,977.03
  4. Step 4: Simplify right side
    672,658.71x = 358,274,236,939.60
  5. Step 5: Solve for x
    x = 358,274,236,939.60/672,658.71
  6. Step 6: Final answer
    x = 532,624.10

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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.