Home / 1,145,125.60-1,717,688.40-809,202.40

Finding the Fourth Proportional to 1,145,125.60, 1,717,688.40 and 809,202.40

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Solution

The fourth proportional to 1,145,125.60, 1,717,688.40 and 809,202.40 is: 1,213,803.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,125.60 : 1,717,688.40 = 809,202.40 : x
  2. Step 2: Convert to fraction form
    1,145,125.60/1,717,688.40 = 809,202.40/x
  3. Step 3: Cross multiply
    1,145,125.60x = 1,717,688.40 × 809,202.40
  4. Step 4: Simplify right side
    1,145,125.60x = 1,389,957,575,732.16
  5. Step 5: Solve for x
    x = 1,389,957,575,732.16/1,145,125.60
  6. Step 6: Final answer
    x = 1,213,803.60

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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.