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Finding the Fourth Proportional to 659,216.10, 909,737.40 and 372,730.02

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Solution

The fourth proportional to 659,216.10, 909,737.40 and 372,730.02 is: 514,378.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,216.10 : 909,737.40 = 372,730.02 : x
  2. Step 2: Convert to fraction form
    659,216.10/909,737.40 = 372,730.02/x
  3. Step 3: Cross multiply
    659,216.10x = 909,737.40 × 372,730.02
  4. Step 4: Simplify right side
    659,216.10x = 339,086,439,296.75
  5. Step 5: Solve for x
    x = 339,086,439,296.75/659,216.10
  6. Step 6: Final answer
    x = 514,378.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.