Home / 1,145,210.60-1,717,815.90-809,287.40

Finding the Fourth Proportional to 1,145,210.60, 1,717,815.90 and 809,287.40

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Solution

The fourth proportional to 1,145,210.60, 1,717,815.90 and 809,287.40 is: 1,213,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,210.60 : 1,717,815.90 = 809,287.40 : x
  2. Step 2: Convert to fraction form
    1,145,210.60/1,717,815.90 = 809,287.40/x
  3. Step 3: Cross multiply
    1,145,210.60x = 1,717,815.90 × 809,287.40
  4. Step 4: Simplify right side
    1,145,210.60x = 1,390,206,763,389.66
  5. Step 5: Solve for x
    x = 1,390,206,763,389.66/1,145,210.60
  6. Step 6: Final answer
    x = 1,213,931.10

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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.