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Finding the Fourth Proportional to 478,543.83, 660,419.90 and 263,683.83

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Solution

The fourth proportional to 478,543.83, 660,419.90 and 263,683.83 is: 363,899.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,543.83 : 660,419.90 = 263,683.83 : x
  2. Step 2: Convert to fraction form
    478,543.83/660,419.90 = 263,683.83/x
  3. Step 3: Cross multiply
    478,543.83x = 660,419.90 × 263,683.83
  4. Step 4: Simplify right side
    478,543.83x = 174,142,048,640.22
  5. Step 5: Solve for x
    x = 174,142,048,640.22/478,543.83
  6. Step 6: Final answer
    x = 363,899.89

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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.