Home / 987,305.60-1,481,649.60-426,742.40

Finding the Fourth Proportional to 987,305.60, 1,481,649.60 and 426,742.40

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Solution

The fourth proportional to 987,305.60, 1,481,649.60 and 426,742.40 is: 640,412.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,305.60 : 1,481,649.60 = 426,742.40 : x
  2. Step 2: Convert to fraction form
    987,305.60/1,481,649.60 = 426,742.40/x
  3. Step 3: Cross multiply
    987,305.60x = 1,481,649.60 × 426,742.40
  4. Step 4: Simplify right side
    987,305.60x = 632,282,706,263.04
  5. Step 5: Solve for x
    x = 632,282,706,263.04/987,305.60
  6. Step 6: Final answer
    x = 640,412.36

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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.