Home / 745,432.12-1,118,033.58-408,639.64

Finding the Fourth Proportional to 745,432.12, 1,118,033.58 and 408,639.64

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Solution

The fourth proportional to 745,432.12, 1,118,033.58 and 408,639.64 is: 612,896.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,432.12 : 1,118,033.58 = 408,639.64 : x
  2. Step 2: Convert to fraction form
    745,432.12/1,118,033.58 = 408,639.64/x
  3. Step 3: Cross multiply
    745,432.12x = 1,118,033.58 × 408,639.64
  4. Step 4: Simplify right side
    745,432.12x = 456,872,839,639.11
  5. Step 5: Solve for x
    x = 456,872,839,639.11/745,432.12
  6. Step 6: Final answer
    x = 612,896.64

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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.