Home / 987,309.60-1,481,655.60-426,746.40

Finding the Fourth Proportional to 987,309.60, 1,481,655.60 and 426,746.40

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Solution

The fourth proportional to 987,309.60, 1,481,655.60 and 426,746.40 is: 640,418.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,309.60 : 1,481,655.60 = 426,746.40 : x
  2. Step 2: Convert to fraction form
    987,309.60/1,481,655.60 = 426,746.40/x
  3. Step 3: Cross multiply
    987,309.60x = 1,481,655.60 × 426,746.40
  4. Step 4: Simplify right side
    987,309.60x = 632,291,193,339.84
  5. Step 5: Solve for x
    x = 632,291,193,339.84/987,309.60
  6. Step 6: Final answer
    x = 640,418.36

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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.