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Finding the Fourth Proportional to 2,019,870.08, 2,788,430.80 and 1,256,169.68

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Solution

The fourth proportional to 2,019,870.08, 2,788,430.80 and 1,256,169.68 is: 1,734,142.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019,870.08 : 2,788,430.80 = 1,256,169.68 : x
  2. Step 2: Convert to fraction form
    2,019,870.08/2,788,430.80 = 1,256,169.68/x
  3. Step 3: Cross multiply
    2,019,870.08x = 2,788,430.80 × 1,256,169.68
  4. Step 4: Simplify right side
    2,019,870.08x = 3,502,742,225,738.14
  5. Step 5: Solve for x
    x = 3,502,742,225,738.14/2,019,870.08
  6. Step 6: Final answer
    x = 1,734,142.34

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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.