Home / 2,660,722.60-3,990,209.10-977,607.40

Finding the Fourth Proportional to 2,660,722.60, 3,990,209.10 and 977,607.40

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Solution

The fourth proportional to 2,660,722.60, 3,990,209.10 and 977,607.40 is: 1,466,089.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660,722.60 : 3,990,209.10 = 977,607.40 : x
  2. Step 2: Convert to fraction form
    2,660,722.60/3,990,209.10 = 977,607.40/x
  3. Step 3: Cross multiply
    2,660,722.60x = 3,990,209.10 × 977,607.40
  4. Step 4: Simplify right side
    2,660,722.60x = 3,900,857,943,707.34
  5. Step 5: Solve for x
    x = 3,900,857,943,707.34/2,660,722.60
  6. Step 6: Final answer
    x = 1,466,089.68

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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.