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Finding the Fourth Proportional to 530,556.32, 732,149.88 and 288,834.32

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Solution

The fourth proportional to 530,556.32, 732,149.88 and 288,834.32 is: 398,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,556.32 : 732,149.88 = 288,834.32 : x
  2. Step 2: Convert to fraction form
    530,556.32/732,149.88 = 288,834.32/x
  3. Step 3: Cross multiply
    530,556.32x = 732,149.88 × 288,834.32
  4. Step 4: Simplify right side
    530,556.32x = 211,470,012,727.88
  5. Step 5: Solve for x
    x = 211,470,012,727.88/530,556.32
  6. Step 6: Final answer
    x = 398,581.65

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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.