Home / 723,489.40-1,085,622.90-302,807.80

Finding the Fourth Proportional to 723,489.40, 1,085,622.90 and 302,807.80

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Solution

The fourth proportional to 723,489.40, 1,085,622.90 and 302,807.80 is: 454,374.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,489.40 : 1,085,622.90 = 302,807.80 : x
  2. Step 2: Convert to fraction form
    723,489.40/1,085,622.90 = 302,807.80/x
  3. Step 3: Cross multiply
    723,489.40x = 1,085,622.90 × 302,807.80
  4. Step 4: Simplify right side
    723,489.40x = 328,735,081,978.62
  5. Step 5: Solve for x
    x = 328,735,081,978.62/723,489.40
  6. Step 6: Final answer
    x = 454,374.43

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Double scale
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1.5x scale

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.