Home / 1,980,185.40-2,968,309.80-913,366.80

Finding the Fourth Proportional to 1,980,185.40, 2,968,309.80 and 913,366.80

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Solution

The fourth proportional to 1,980,185.40, 2,968,309.80 and 913,366.80 is: 1,369,142.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980,185.40 : 2,968,309.80 = 913,366.80 : x
  2. Step 2: Convert to fraction form
    1,980,185.40/2,968,309.80 = 913,366.80/x
  3. Step 3: Cross multiply
    1,980,185.40x = 2,968,309.80 × 913,366.80
  4. Step 4: Simplify right side
    1,980,185.40x = 2,711,155,623,434.64
  5. Step 5: Solve for x
    x = 2,711,155,623,434.64/1,980,185.40
  6. Step 6: Final answer
    x = 1,369,142.32

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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.