Home / 2,657,970.40-3,987,538.80-1,310,778.40

Finding the Fourth Proportional to 2,657,970.40, 3,987,538.80 and 1,310,778.40

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Solution

The fourth proportional to 2,657,970.40, 3,987,538.80 and 1,310,778.40 is: 1,966,455.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657,970.40 : 3,987,538.80 = 1,310,778.40 : x
  2. Step 2: Convert to fraction form
    2,657,970.40/3,987,538.80 = 1,310,778.40/x
  3. Step 3: Cross multiply
    2,657,970.40x = 3,987,538.80 × 1,310,778.40
  4. Step 4: Simplify right side
    2,657,970.40x = 5,226,779,728,201.92
  5. Step 5: Solve for x
    x = 5,226,779,728,201.92/2,657,970.40
  6. Step 6: Final answer
    x = 1,966,455.21

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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.