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Finding the Fourth Proportional to 659,484.98, 910,089.34 and 372,998.98

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Solution

The fourth proportional to 659,484.98, 910,089.34 and 372,998.98 is: 514,738.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,484.98 : 910,089.34 = 372,998.98 : x
  2. Step 2: Convert to fraction form
    659,484.98/910,089.34 = 372,998.98/x
  3. Step 3: Cross multiply
    659,484.98x = 910,089.34 × 372,998.98
  4. Step 4: Simplify right side
    659,484.98x = 339,462,390,978.43
  5. Step 5: Solve for x
    x = 339,462,390,978.43/659,484.98
  6. Step 6: Final answer
    x = 514,738.63

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Double scale
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Similar ratio
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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.