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Finding the Fourth Proportional to 459,990.28, 634,341.54 and 298,888.84

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Solution

The fourth proportional to 459,990.28, 634,341.54 and 298,888.84 is: 412,177.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,990.28 : 634,341.54 = 298,888.84 : x
  2. Step 2: Convert to fraction form
    459,990.28/634,341.54 = 298,888.84/x
  3. Step 3: Cross multiply
    459,990.28x = 634,341.54 × 298,888.84
  4. Step 4: Simplify right side
    459,990.28x = 189,597,607,054.41
  5. Step 5: Solve for x
    x = 189,597,607,054.41/459,990.28
  6. Step 6: Final answer
    x = 412,177.42

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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.