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Finding the Fourth Proportional to 659,711.32, 910,403.40 and 357,905.32

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Solution

The fourth proportional to 659,711.32, 910,403.40 and 357,905.32 is: 493,910.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,711.32 : 910,403.40 = 357,905.32 : x
  2. Step 2: Convert to fraction form
    659,711.32/910,403.40 = 357,905.32/x
  3. Step 3: Cross multiply
    659,711.32x = 910,403.40 × 357,905.32
  4. Step 4: Simplify right side
    659,711.32x = 325,838,220,206.09
  5. Step 5: Solve for x
    x = 325,838,220,206.09/659,711.32
  6. Step 6: Final answer
    x = 493,910.31

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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.