Home / 3,120,505.60-4,680,412.80-876,870.40

Finding the Fourth Proportional to 3,120,505.60, 4,680,412.80 and 876,870.40

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Solution

The fourth proportional to 3,120,505.60, 4,680,412.80 and 876,870.40 is: 1,315,208.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,505.60 : 4,680,412.80 = 876,870.40 : x
  2. Step 2: Convert to fraction form
    3,120,505.60/4,680,412.80 = 876,870.40/x
  3. Step 3: Cross multiply
    3,120,505.60x = 4,680,412.80 × 876,870.40
  4. Step 4: Simplify right side
    3,120,505.60x = 4,104,115,444,101.12
  5. Step 5: Solve for x
    x = 4,104,115,444,101.12/3,120,505.60
  6. Step 6: Final answer
    x = 1,315,208.49

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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.