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Finding the Fourth Proportional to 679,994.80, 1,019,992.20 and 606,511.60

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Solution

The fourth proportional to 679,994.80, 1,019,992.20 and 606,511.60 is: 909,767.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,994.80 : 1,019,992.20 = 606,511.60 : x
  2. Step 2: Convert to fraction form
    679,994.80/1,019,992.20 = 606,511.60/x
  3. Step 3: Cross multiply
    679,994.80x = 1,019,992.20 × 606,511.60
  4. Step 4: Simplify right side
    679,994.80x = 618,637,101,209.52
  5. Step 5: Solve for x
    x = 618,637,101,209.52/679,994.80
  6. Step 6: Final answer
    x = 909,767.40

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Similar ratio
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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.