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Finding the Fourth Proportional to 407,419.70, 612,051.15 and 283,003.70

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Solution

The fourth proportional to 407,419.70, 612,051.15 and 283,003.70 is: 425,145.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,419.70 : 612,051.15 = 283,003.70 : x
  2. Step 2: Convert to fraction form
    407,419.70/612,051.15 = 283,003.70/x
  3. Step 3: Cross multiply
    407,419.70x = 612,051.15 × 283,003.70
  4. Step 4: Simplify right side
    407,419.70x = 173,212,740,039.26
  5. Step 5: Solve for x
    x = 173,212,740,039.26/407,419.70
  6. Step 6: Final answer
    x = 425,145.72

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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.