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Finding the Fourth Proportional to 530,639.67, 732,275.43 and 288,922.23

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Solution

The fourth proportional to 530,639.67, 732,275.43 and 288,922.23 is: 398,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,639.67 : 732,275.43 = 288,922.23 : x
  2. Step 2: Convert to fraction form
    530,639.67/732,275.43 = 288,922.23/x
  3. Step 3: Cross multiply
    530,639.67x = 732,275.43 × 288,922.23
  4. Step 4: Simplify right side
    530,639.67x = 211,570,654,152.56
  5. Step 5: Solve for x
    x = 211,570,654,152.56/530,639.67
  6. Step 6: Final answer
    x = 398,708.70

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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.