Home / 1,187,788.86-1,781,308.26-388,886.67

Finding the Fourth Proportional to 1,187,788.86, 1,781,308.26 and 388,886.67

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Solution

The fourth proportional to 1,187,788.86, 1,781,308.26 and 388,886.67 is: 583,207.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,788.86 : 1,781,308.26 = 388,886.67 : x
  2. Step 2: Convert to fraction form
    1,187,788.86/1,781,308.26 = 388,886.67/x
  3. Step 3: Cross multiply
    1,187,788.86x = 1,781,308.26 × 388,886.67
  4. Step 4: Simplify right side
    1,187,788.86x = 692,727,037,474.89
  5. Step 5: Solve for x
    x = 692,727,037,474.89/1,187,788.86
  6. Step 6: Final answer
    x = 583,207.22

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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.