Home / 688,007.90-1,030,456.65-408,071.90

Finding the Fourth Proportional to 688,007.90, 1,030,456.65 and 408,071.90

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Solution

The fourth proportional to 688,007.90, 1,030,456.65 and 408,071.90 is: 611,185.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,007.90 : 1,030,456.65 = 408,071.90 : x
  2. Step 2: Convert to fraction form
    688,007.90/1,030,456.65 = 408,071.90/x
  3. Step 3: Cross multiply
    688,007.90x = 1,030,456.65 × 408,071.90
  4. Step 4: Simplify right side
    688,007.90x = 420,500,403,033.14
  5. Step 5: Solve for x
    x = 420,500,403,033.14/688,007.90
  6. Step 6: Final answer
    x = 611,185.43

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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.