Home / 664,501.20-997,043.40-309,332.40

Finding the Fourth Proportional to 664,501.20, 997,043.40 and 309,332.40

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Solution

The fourth proportional to 664,501.20, 997,043.40 and 309,332.40 is: 464,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,501.20 : 997,043.40 = 309,332.40 : x
  2. Step 2: Convert to fraction form
    664,501.20/997,043.40 = 309,332.40/x
  3. Step 3: Cross multiply
    664,501.20x = 997,043.40 × 309,332.40
  4. Step 4: Simplify right side
    664,501.20x = 308,417,827,826.16
  5. Step 5: Solve for x
    x = 308,417,827,826.16/664,501.20
  6. Step 6: Final answer
    x = 464,134.34

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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.