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Finding the Fourth Proportional to 634,858.76, 876,118.47 and 348,376.34

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Solution

The fourth proportional to 634,858.76, 876,118.47 and 348,376.34 is: 480,766.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,858.76 : 876,118.47 = 348,376.34 : x
  2. Step 2: Convert to fraction form
    634,858.76/876,118.47 = 348,376.34/x
  3. Step 3: Cross multiply
    634,858.76x = 876,118.47 × 348,376.34
  4. Step 4: Simplify right side
    634,858.76x = 305,218,945,985.00
  5. Step 5: Solve for x
    x = 305,218,945,985.00/634,858.76
  6. Step 6: Final answer
    x = 480,766.69

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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.