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Finding the Fourth Proportional to 653,455.20, 979,664.40 and 357,967.20

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Solution

The fourth proportional to 653,455.20, 979,664.40 and 357,967.20 is: 536,666.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,455.20 : 979,664.40 = 357,967.20 : x
  2. Step 2: Convert to fraction form
    653,455.20/979,664.40 = 357,967.20/x
  3. Step 3: Cross multiply
    653,455.20x = 979,664.40 × 357,967.20
  4. Step 4: Simplify right side
    653,455.20x = 350,687,722,207.68
  5. Step 5: Solve for x
    x = 350,687,722,207.68/653,455.20
  6. Step 6: Final answer
    x = 536,666.82

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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.