Home / 1,181,478.60-1,768,281.30-1,087,000.20

Finding the Fourth Proportional to 1,181,478.60, 1,768,281.30 and 1,087,000.20

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Solution

The fourth proportional to 1,181,478.60, 1,768,281.30 and 1,087,000.20 is: 1,626,878.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181,478.60 : 1,768,281.30 = 1,087,000.20 : x
  2. Step 2: Convert to fraction form
    1,181,478.60/1,768,281.30 = 1,087,000.20/x
  3. Step 3: Cross multiply
    1,181,478.60x = 1,768,281.30 × 1,087,000.20
  4. Step 4: Simplify right side
    1,181,478.60x = 1,922,122,126,756.26
  5. Step 5: Solve for x
    x = 1,922,122,126,756.26/1,181,478.60
  6. Step 6: Final answer
    x = 1,626,878.50

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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.