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Finding the Fourth Proportional to 562,982.40, 842,918.40 and 438,566.40

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Solution

The fourth proportional to 562,982.40, 842,918.40 and 438,566.40 is: 656,638.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,982.40 : 842,918.40 = 438,566.40 : x
  2. Step 2: Convert to fraction form
    562,982.40/842,918.40 = 438,566.40/x
  3. Step 3: Cross multiply
    562,982.40x = 842,918.40 × 438,566.40
  4. Step 4: Simplify right side
    562,982.40x = 369,675,688,181.76
  5. Step 5: Solve for x
    x = 369,675,688,181.76/562,982.40
  6. Step 6: Final answer
    x = 656,638.09

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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.