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Finding the Fourth Proportional to 653,089.62, 980,008.20 and 253,678.72

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Solution

The fourth proportional to 653,089.62, 980,008.20 and 253,678.72 is: 380,663.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,089.62 : 980,008.20 = 253,678.72 : x
  2. Step 2: Convert to fraction form
    653,089.62/980,008.20 = 253,678.72/x
  3. Step 3: Cross multiply
    653,089.62x = 980,008.20 × 253,678.72
  4. Step 4: Simplify right side
    653,089.62x = 248,607,225,765.50
  5. Step 5: Solve for x
    x = 248,607,225,765.50/653,089.62
  6. Step 6: Final answer
    x = 380,663.26

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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.