Home / 1,379,792.40-2,069,785.80-781,040.40

Finding the Fourth Proportional to 1,379,792.40, 2,069,785.80 and 781,040.40

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Solution

The fourth proportional to 1,379,792.40, 2,069,785.80 and 781,040.40 is: 1,171,615.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,792.40 : 2,069,785.80 = 781,040.40 : x
  2. Step 2: Convert to fraction form
    1,379,792.40/2,069,785.80 = 781,040.40/x
  3. Step 3: Cross multiply
    1,379,792.40x = 2,069,785.80 × 781,040.40
  4. Step 4: Simplify right side
    1,379,792.40x = 1,616,586,329,146.32
  5. Step 5: Solve for x
    x = 1,616,586,329,146.32/1,379,792.40
  6. Step 6: Final answer
    x = 1,171,615.62

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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.