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Finding the Fourth Proportional to 610,720.90, 842,799.90 and 338,806.60

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Solution

The fourth proportional to 610,720.90, 842,799.90 and 338,806.60 is: 467,555.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,720.90 : 842,799.90 = 338,806.60 : x
  2. Step 2: Convert to fraction form
    610,720.90/842,799.90 = 338,806.60/x
  3. Step 3: Cross multiply
    610,720.90x = 842,799.90 × 338,806.60
  4. Step 4: Simplify right side
    610,720.90x = 285,546,168,599.34
  5. Step 5: Solve for x
    x = 285,546,168,599.34/610,720.90
  6. Step 6: Final answer
    x = 467,555.91

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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.