Home / 1,212,595.20-1,820,390.40-763,315.20

Finding the Fourth Proportional to 1,212,595.20, 1,820,390.40 and 763,315.20

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Solution

The fourth proportional to 1,212,595.20, 1,820,390.40 and 763,315.20 is: 1,145,915.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,595.20 : 1,820,390.40 = 763,315.20 : x
  2. Step 2: Convert to fraction form
    1,212,595.20/1,820,390.40 = 763,315.20/x
  3. Step 3: Cross multiply
    1,212,595.20x = 1,820,390.40 × 763,315.20
  4. Step 4: Simplify right side
    1,212,595.20x = 1,389,531,662,254.08
  5. Step 5: Solve for x
    x = 1,389,531,662,254.08/1,212,595.20
  6. Step 6: Final answer
    x = 1,145,915.52

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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.