Home / 1,320,030.61-1,980,878.89-561,870.86

Finding the Fourth Proportional to 1,320,030.61, 1,980,878.89 and 561,870.86

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Solution

The fourth proportional to 1,320,030.61, 1,980,878.89 and 561,870.86 is: 843,160.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,030.61 : 1,980,878.89 = 561,870.86 : x
  2. Step 2: Convert to fraction form
    1,320,030.61/1,980,878.89 = 561,870.86/x
  3. Step 3: Cross multiply
    1,320,030.61x = 1,980,878.89 × 561,870.86
  4. Step 4: Simplify right side
    1,320,030.61x = 1,112,998,131,183.72
  5. Step 5: Solve for x
    x = 1,112,998,131,183.72/1,320,030.61
  6. Step 6: Final answer
    x = 843,160.85

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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.