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Finding the Fourth Proportional to 654,307.20, 980,942.40 and 358,819.20

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Solution

The fourth proportional to 654,307.20, 980,942.40 and 358,819.20 is: 537,944.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,307.20 : 980,942.40 = 358,819.20 : x
  2. Step 2: Convert to fraction form
    654,307.20/980,942.40 = 358,819.20/x
  3. Step 3: Cross multiply
    654,307.20x = 980,942.40 × 358,819.20
  4. Step 4: Simplify right side
    654,307.20x = 351,980,967,214.08
  5. Step 5: Solve for x
    x = 351,980,967,214.08/654,307.20
  6. Step 6: Final answer
    x = 537,944.51

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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.