Home / 686,327.22-1,029,139.83-286,858.98

Finding the Fourth Proportional to 686,327.22, 1,029,139.83 and 286,858.98

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Solution

The fourth proportional to 686,327.22, 1,029,139.83 and 286,858.98 is: 430,141.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,327.22 : 1,029,139.83 = 286,858.98 : x
  2. Step 2: Convert to fraction form
    686,327.22/1,029,139.83 = 286,858.98/x
  3. Step 3: Cross multiply
    686,327.22x = 1,029,139.83 × 286,858.98
  4. Step 4: Simplify right side
    686,327.22x = 295,218,001,911.17
  5. Step 5: Solve for x
    x = 295,218,001,911.17/686,327.22
  6. Step 6: Final answer
    x = 430,141.77

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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.