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Finding the Fourth Proportional to 709,590, 979,234.20 and 483,630.24

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Solution

The fourth proportional to 709,590, 979,234.20 and 483,630.24 is: 667,409.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,590 : 979,234.20 = 483,630.24 : x
  2. Step 2: Convert to fraction form
    709,590/979,234.20 = 483,630.24/x
  3. Step 3: Cross multiply
    709,590x = 979,234.20 × 483,630.24
  4. Step 4: Simplify right side
    709,590x = 473,587,271,162.21
  5. Step 5: Solve for x
    x = 473,587,271,162.21/709,590
  6. Step 6: Final answer
    x = 667,409.73

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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.