Home / 686,947.80-1,030,421.70-613,464.60

Finding the Fourth Proportional to 686,947.80, 1,030,421.70 and 613,464.60

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Solution

The fourth proportional to 686,947.80, 1,030,421.70 and 613,464.60 is: 920,196.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,947.80 : 1,030,421.70 = 613,464.60 : x
  2. Step 2: Convert to fraction form
    686,947.80/1,030,421.70 = 613,464.60/x
  3. Step 3: Cross multiply
    686,947.80x = 1,030,421.70 × 613,464.60
  4. Step 4: Simplify right side
    686,947.80x = 632,127,236,021.82
  5. Step 5: Solve for x
    x = 632,127,236,021.82/686,947.80
  6. Step 6: Final answer
    x = 920,196.90

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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.