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Finding the Fourth Proportional to 530,432.42, 732,012.22 and 288,730.58

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Solution

The fourth proportional to 530,432.42, 732,012.22 and 288,730.58 is: 398,456.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,432.42 : 732,012.22 = 288,730.58 : x
  2. Step 2: Convert to fraction form
    530,432.42/732,012.22 = 288,730.58/x
  3. Step 3: Cross multiply
    530,432.42x = 732,012.22 × 288,730.58
  4. Step 4: Simplify right side
    530,432.42x = 211,354,312,847.69
  5. Step 5: Solve for x
    x = 211,354,312,847.69/530,432.42
  6. Step 6: Final answer
    x = 398,456.63

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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.