Home / 723,802.40-998,880.08-401,512.72

Finding the Fourth Proportional to 723,802.40, 998,880.08 and 401,512.72

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Solution

The fourth proportional to 723,802.40, 998,880.08 and 401,512.72 is: 554,105.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,802.40 : 998,880.08 = 401,512.72 : x
  2. Step 2: Convert to fraction form
    723,802.40/998,880.08 = 401,512.72/x
  3. Step 3: Cross multiply
    723,802.40x = 998,880.08 × 401,512.72
  4. Step 4: Simplify right side
    723,802.40x = 401,063,057,874.62
  5. Step 5: Solve for x
    x = 401,063,057,874.62/723,802.40
  6. Step 6: Final answer
    x = 554,105.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.