Home / 1,288,350.72-1,778,185.08-744,509.40

Finding the Fourth Proportional to 1,288,350.72, 1,778,185.08 and 744,509.40

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Solution

The fourth proportional to 1,288,350.72, 1,778,185.08 and 744,509.40 is: 1,027,573.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,350.72 : 1,778,185.08 = 744,509.40 : x
  2. Step 2: Convert to fraction form
    1,288,350.72/1,778,185.08 = 744,509.40/x
  3. Step 3: Cross multiply
    1,288,350.72x = 1,778,185.08 × 744,509.40
  4. Step 4: Simplify right side
    1,288,350.72x = 1,323,875,506,999.75
  5. Step 5: Solve for x
    x = 1,323,875,506,999.75/1,288,350.72
  6. Step 6: Final answer
    x = 1,027,573.85

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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.