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Finding the Fourth Proportional to 562,984.40, 842,921.40 and 438,568.40

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Solution

The fourth proportional to 562,984.40, 842,921.40 and 438,568.40 is: 656,641.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,984.40 : 842,921.40 = 438,568.40 : x
  2. Step 2: Convert to fraction form
    562,984.40/842,921.40 = 438,568.40/x
  3. Step 3: Cross multiply
    562,984.40x = 842,921.40 × 438,568.40
  4. Step 4: Simplify right side
    562,984.40x = 369,678,689,723.76
  5. Step 5: Solve for x
    x = 369,678,689,723.76/562,984.40
  6. Step 6: Final answer
    x = 656,641.09

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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.