Home / 1,312,320.72-1,968,294.12-413,645.60

Finding the Fourth Proportional to 1,312,320.72, 1,968,294.12 and 413,645.60

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Solution

The fourth proportional to 1,312,320.72, 1,968,294.12 and 413,645.60 is: 620,409.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,320.72 : 1,968,294.12 = 413,645.60 : x
  2. Step 2: Convert to fraction form
    1,312,320.72/1,968,294.12 = 413,645.60/x
  3. Step 3: Cross multiply
    1,312,320.72x = 1,968,294.12 × 413,645.60
  4. Step 4: Simplify right side
    1,312,320.72x = 814,176,202,243.87
  5. Step 5: Solve for x
    x = 814,176,202,243.87/1,312,320.72
  6. Step 6: Final answer
    x = 620,409.47

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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.