Home / 1,315,940.80-1,972,701.60-1,315,134.40

Finding the Fourth Proportional to 1,315,940.80, 1,972,701.60 and 1,315,134.40

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Solution

The fourth proportional to 1,315,940.80, 1,972,701.60 and 1,315,134.40 is: 1,971,492.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,940.80 : 1,972,701.60 = 1,315,134.40 : x
  2. Step 2: Convert to fraction form
    1,315,940.80/1,972,701.60 = 1,315,134.40/x
  3. Step 3: Cross multiply
    1,315,940.80x = 1,972,701.60 × 1,315,134.40
  4. Step 4: Simplify right side
    1,315,940.80x = 2,594,367,735,095.04
  5. Step 5: Solve for x
    x = 2,594,367,735,095.04/1,315,940.80
  6. Step 6: Final answer
    x = 1,971,492.74

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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.