Home / 1,245,642.80-1,868,464.20-947,044.40

Finding the Fourth Proportional to 1,245,642.80, 1,868,464.20 and 947,044.40

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Solution

The fourth proportional to 1,245,642.80, 1,868,464.20 and 947,044.40 is: 1,420,566.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,642.80 : 1,868,464.20 = 947,044.40 : x
  2. Step 2: Convert to fraction form
    1,245,642.80/1,868,464.20 = 947,044.40/x
  3. Step 3: Cross multiply
    1,245,642.80x = 1,868,464.20 × 947,044.40
  4. Step 4: Simplify right side
    1,245,642.80x = 1,769,518,557,210.48
  5. Step 5: Solve for x
    x = 1,769,518,557,210.48/1,245,642.80
  6. Step 6: Final answer
    x = 1,420,566.60

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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.