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Finding the Fourth Proportional to 661,488.40, 992,362.20 and 282,408.40

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Solution

The fourth proportional to 661,488.40, 992,362.20 and 282,408.40 is: 423,667.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,488.40 : 992,362.20 = 282,408.40 : x
  2. Step 2: Convert to fraction form
    661,488.40/992,362.20 = 282,408.40/x
  3. Step 3: Cross multiply
    661,488.40x = 992,362.20 × 282,408.40
  4. Step 4: Simplify right side
    661,488.40x = 280,251,421,122.48
  5. Step 5: Solve for x
    x = 280,251,421,122.48/661,488.40
  6. Step 6: Final answer
    x = 423,667.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.