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Finding the Fourth Proportional to 562,986.40, 842,924.40 and 438,570.40

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Solution

The fourth proportional to 562,986.40, 842,924.40 and 438,570.40 is: 656,644.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,986.40 : 842,924.40 = 438,570.40 : x
  2. Step 2: Convert to fraction form
    562,986.40/842,924.40 = 438,570.40/x
  3. Step 3: Cross multiply
    562,986.40x = 842,924.40 × 438,570.40
  4. Step 4: Simplify right side
    562,986.40x = 369,681,691,277.76
  5. Step 5: Solve for x
    x = 369,681,691,277.76/562,986.40
  6. Step 6: Final answer
    x = 656,644.09

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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.