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Finding the Fourth Proportional to 549,099.80, 823,649.70 and 312,903.80

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Solution

The fourth proportional to 549,099.80, 823,649.70 and 312,903.80 is: 469,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,099.80 : 823,649.70 = 312,903.80 : x
  2. Step 2: Convert to fraction form
    549,099.80/823,649.70 = 312,903.80/x
  3. Step 3: Cross multiply
    549,099.80x = 823,649.70 × 312,903.80
  4. Step 4: Simplify right side
    549,099.80x = 257,723,120,998.86
  5. Step 5: Solve for x
    x = 257,723,120,998.86/549,099.80
  6. Step 6: Final answer
    x = 469,355.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.