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Finding the Fourth Proportional to 659,659.12, 910,331.32 and 357,853.12

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Solution

The fourth proportional to 659,659.12, 910,331.32 and 357,853.12 is: 493,838.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,659.12 : 910,331.32 = 357,853.12 : x
  2. Step 2: Convert to fraction form
    659,659.12/910,331.32 = 357,853.12/x
  3. Step 3: Cross multiply
    659,659.12x = 910,331.32 × 357,853.12
  4. Step 4: Simplify right side
    659,659.12x = 325,764,903,095.72
  5. Step 5: Solve for x
    x = 325,764,903,095.72/659,659.12
  6. Step 6: Final answer
    x = 493,838.25

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1.5x scale

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.