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Finding the Fourth Proportional to 604,421.40, 907,288.20 and 471,889.20

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Solution

The fourth proportional to 604,421.40, 907,288.20 and 471,889.20 is: 708,346.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,421.40 : 907,288.20 = 471,889.20 : x
  2. Step 2: Convert to fraction form
    604,421.40/907,288.20 = 471,889.20/x
  3. Step 3: Cross multiply
    604,421.40x = 907,288.20 × 471,889.20
  4. Step 4: Simplify right side
    604,421.40x = 428,139,502,867.44
  5. Step 5: Solve for x
    x = 428,139,502,867.44/604,421.40
  6. Step 6: Final answer
    x = 708,346.04

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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.