Home / 1,971,140.80-2,720,172-1,065,720.64

Finding the Fourth Proportional to 1,971,140.80, 2,720,172 and 1,065,720.64

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Solution

The fourth proportional to 1,971,140.80, 2,720,172 and 1,065,720.64 is: 1,470,693.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971,140.80 : 2,720,172 = 1,065,720.64 : x
  2. Step 2: Convert to fraction form
    1,971,140.80/2,720,172 = 1,065,720.64/x
  3. Step 3: Cross multiply
    1,971,140.80x = 2,720,172 × 1,065,720.64
  4. Step 4: Simplify right side
    1,971,140.80x = 2,898,943,444,750.08
  5. Step 5: Solve for x
    x = 2,898,943,444,750.08/1,971,140.80
  6. Step 6: Final answer
    x = 1,470,693.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.