Home / 1,188,142.28-1,782,545.58-389,985.32

Finding the Fourth Proportional to 1,188,142.28, 1,782,545.58 and 389,985.32

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Solution

The fourth proportional to 1,188,142.28, 1,782,545.58 and 389,985.32 is: 585,087.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,142.28 : 1,782,545.58 = 389,985.32 : x
  2. Step 2: Convert to fraction form
    1,188,142.28/1,782,545.58 = 389,985.32/x
  3. Step 3: Cross multiply
    1,188,142.28x = 1,782,545.58 × 389,985.32
  4. Step 4: Simplify right side
    1,188,142.28x = 695,166,608,430.89
  5. Step 5: Solve for x
    x = 695,166,608,430.89/1,188,142.28
  6. Step 6: Final answer
    x = 585,087.01

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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.