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Finding the Fourth Proportional to 478,543.39, 660,419.29 and 263,683.40

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Solution

The fourth proportional to 478,543.39, 660,419.29 and 263,683.40 is: 363,899.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,543.39 : 660,419.29 = 263,683.40 : x
  2. Step 2: Convert to fraction form
    478,543.39/660,419.29 = 263,683.40/x
  3. Step 3: Cross multiply
    478,543.39x = 660,419.29 × 263,683.40
  4. Step 4: Simplify right side
    478,543.39x = 174,141,600,840.29
  5. Step 5: Solve for x
    x = 174,141,600,840.29/478,543.39
  6. Step 6: Final answer
    x = 363,899.29

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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.