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Finding the Fourth Proportional to 530,642.62, 732,300.78 and 288,935.38

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Solution

The fourth proportional to 530,642.62, 732,300.78 and 288,935.38 is: 398,738.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,642.62 : 732,300.78 = 288,935.38 : x
  2. Step 2: Convert to fraction form
    530,642.62/732,300.78 = 288,935.38/x
  3. Step 3: Cross multiply
    530,642.62x = 732,300.78 × 288,935.38
  4. Step 4: Simplify right side
    530,642.62x = 211,587,604,143.60
  5. Step 5: Solve for x
    x = 211,587,604,143.60/530,642.62
  6. Step 6: Final answer
    x = 398,738.43

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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.