Home / 815,628.30-1,223,442.45-478,830.30

Finding the Fourth Proportional to 815,628.30, 1,223,442.45 and 478,830.30

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Solution

The fourth proportional to 815,628.30, 1,223,442.45 and 478,830.30 is: 718,245.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,628.30 : 1,223,442.45 = 478,830.30 : x
  2. Step 2: Convert to fraction form
    815,628.30/1,223,442.45 = 478,830.30/x
  3. Step 3: Cross multiply
    815,628.30x = 1,223,442.45 × 478,830.30
  4. Step 4: Simplify right side
    815,628.30x = 585,821,315,366.24
  5. Step 5: Solve for x
    x = 585,821,315,366.24/815,628.30
  6. Step 6: Final answer
    x = 718,245.45

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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.