Home / 1,314,159.20-1,971,238.80-865,386.80

Finding the Fourth Proportional to 1,314,159.20, 1,971,238.80 and 865,386.80

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Solution

The fourth proportional to 1,314,159.20, 1,971,238.80 and 865,386.80 is: 1,298,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,159.20 : 1,971,238.80 = 865,386.80 : x
  2. Step 2: Convert to fraction form
    1,314,159.20/1,971,238.80 = 865,386.80/x
  3. Step 3: Cross multiply
    1,314,159.20x = 1,971,238.80 × 865,386.80
  4. Step 4: Simplify right side
    1,314,159.20x = 1,705,884,037,167.84
  5. Step 5: Solve for x
    x = 1,705,884,037,167.84/1,314,159.20
  6. Step 6: Final answer
    x = 1,298,080.20

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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.