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Finding the Fourth Proportional to 653,335.20, 980,031.60 and 369,021.60

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Solution

The fourth proportional to 653,335.20, 980,031.60 and 369,021.60 is: 553,548.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,335.20 : 980,031.60 = 369,021.60 : x
  2. Step 2: Convert to fraction form
    653,335.20/980,031.60 = 369,021.60/x
  3. Step 3: Cross multiply
    653,335.20x = 980,031.60 × 369,021.60
  4. Step 4: Simplify right side
    653,335.20x = 361,652,829,082.56
  5. Step 5: Solve for x
    x = 361,652,829,082.56/653,335.20
  6. Step 6: Final answer
    x = 553,548.67

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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.