Home / 876,631.60-1,314,947.40-640,435.60

Finding the Fourth Proportional to 876,631.60, 1,314,947.40 and 640,435.60

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Solution

The fourth proportional to 876,631.60, 1,314,947.40 and 640,435.60 is: 960,653.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,631.60 : 1,314,947.40 = 640,435.60 : x
  2. Step 2: Convert to fraction form
    876,631.60/1,314,947.40 = 640,435.60/x
  3. Step 3: Cross multiply
    876,631.60x = 1,314,947.40 × 640,435.60
  4. Step 4: Simplify right side
    876,631.60x = 842,139,127,087.44
  5. Step 5: Solve for x
    x = 842,139,127,087.44/876,631.60
  6. Step 6: Final answer
    x = 960,653.40

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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.