Home / 1,287,570.15-1,931,355.23-389,150.55

Finding the Fourth Proportional to 1,287,570.15, 1,931,355.23 and 389,150.55

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Solution

The fourth proportional to 1,287,570.15, 1,931,355.23 and 389,150.55 is: 583,725.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,570.15 : 1,931,355.23 = 389,150.55 : x
  2. Step 2: Convert to fraction form
    1,287,570.15/1,931,355.23 = 389,150.55/x
  3. Step 3: Cross multiply
    1,287,570.15x = 1,931,355.23 × 389,150.55
  4. Step 4: Simplify right side
    1,287,570.15x = 751,587,948,054.12
  5. Step 5: Solve for x
    x = 751,587,948,054.12/1,287,570.15
  6. Step 6: Final answer
    x = 583,725.83

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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.