Home / 1,312,145.60-1,968,218.40-839,364.80

Finding the Fourth Proportional to 1,312,145.60, 1,968,218.40 and 839,364.80

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Solution

The fourth proportional to 1,312,145.60, 1,968,218.40 and 839,364.80 is: 1,259,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,145.60 : 1,968,218.40 = 839,364.80 : x
  2. Step 2: Convert to fraction form
    1,312,145.60/1,968,218.40 = 839,364.80/x
  3. Step 3: Cross multiply
    1,312,145.60x = 1,968,218.40 × 839,364.80
  4. Step 4: Simplify right side
    1,312,145.60x = 1,652,053,243,672.32
  5. Step 5: Solve for x
    x = 1,652,053,243,672.32/1,312,145.60
  6. Step 6: Final answer
    x = 1,259,047.20

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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.