Home / 2,578,890.60-3,868,368.30-781,792.20

Finding the Fourth Proportional to 2,578,890.60, 3,868,368.30 and 781,792.20

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Solution

The fourth proportional to 2,578,890.60, 3,868,368.30 and 781,792.20 is: 1,172,698.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578,890.60 : 3,868,368.30 = 781,792.20 : x
  2. Step 2: Convert to fraction form
    2,578,890.60/3,868,368.30 = 781,792.20/x
  3. Step 3: Cross multiply
    2,578,890.60x = 3,868,368.30 × 781,792.20
  4. Step 4: Simplify right side
    2,578,890.60x = 3,024,260,163,667.26
  5. Step 5: Solve for x
    x = 3,024,260,163,667.26/2,578,890.60
  6. Step 6: Final answer
    x = 1,172,698.12

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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.