Home / 1,291,867.80-1,937,801.70-1,011,624.60

Finding the Fourth Proportional to 1,291,867.80, 1,937,801.70 and 1,011,624.60

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Solution

The fourth proportional to 1,291,867.80, 1,937,801.70 and 1,011,624.60 is: 1,517,436.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,867.80 : 1,937,801.70 = 1,011,624.60 : x
  2. Step 2: Convert to fraction form
    1,291,867.80/1,937,801.70 = 1,011,624.60/x
  3. Step 3: Cross multiply
    1,291,867.80x = 1,937,801.70 × 1,011,624.60
  4. Step 4: Simplify right side
    1,291,867.80x = 1,960,327,869,641.82
  5. Step 5: Solve for x
    x = 1,960,327,869,641.82/1,291,867.80
  6. Step 6: Final answer
    x = 1,517,436.90

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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.