Home / 711,435.72-1,067,155.40-290,711.60

Finding the Fourth Proportional to 711,435.72, 1,067,155.40 and 290,711.60

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Solution

The fourth proportional to 711,435.72, 1,067,155.40 and 290,711.60 is: 436,068.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,435.72 : 1,067,155.40 = 290,711.60 : x
  2. Step 2: Convert to fraction form
    711,435.72/1,067,155.40 = 290,711.60/x
  3. Step 3: Cross multiply
    711,435.72x = 1,067,155.40 × 290,711.60
  4. Step 4: Simplify right side
    711,435.72x = 310,234,448,446.86
  5. Step 5: Solve for x
    x = 310,234,448,446.86/711,435.72
  6. Step 6: Final answer
    x = 436,068.14

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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.