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Finding the Fourth Proportional to 672,630, 927,704.28 and 430,935

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Solution

The fourth proportional to 672,630, 927,704.28 and 430,935 is: 594,353.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,630 : 927,704.28 = 430,935 : x
  2. Step 2: Convert to fraction form
    672,630/927,704.28 = 430,935/x
  3. Step 3: Cross multiply
    672,630x = 927,704.28 × 430,935
  4. Step 4: Simplify right side
    672,630x = 399,780,243,901.80
  5. Step 5: Solve for x
    x = 399,780,243,901.80/672,630
  6. Step 6: Final answer
    x = 594,353.87

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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.