Home / 1,275,066.90-1,758,682.53-821,920.50

Finding the Fourth Proportional to 1,275,066.90, 1,758,682.53 and 821,920.50

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Solution

The fourth proportional to 1,275,066.90, 1,758,682.53 and 821,920.50 is: 1,133,663.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,066.90 : 1,758,682.53 = 821,920.50 : x
  2. Step 2: Convert to fraction form
    1,275,066.90/1,758,682.53 = 821,920.50/x
  3. Step 3: Cross multiply
    1,275,066.90x = 1,758,682.53 × 821,920.50
  4. Step 4: Simplify right side
    1,275,066.90x = 1,445,497,224,398.87
  5. Step 5: Solve for x
    x = 1,445,497,224,398.87/1,275,066.90
  6. Step 6: Final answer
    x = 1,133,663.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.