Home / 726,712.60-1,090,716.90-426,818.20

Finding the Fourth Proportional to 726,712.60, 1,090,716.90 and 426,818.20

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Solution

The fourth proportional to 726,712.60, 1,090,716.90 and 426,818.20 is: 640,607.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,712.60 : 1,090,716.90 = 426,818.20 : x
  2. Step 2: Convert to fraction form
    726,712.60/1,090,716.90 = 426,818.20/x
  3. Step 3: Cross multiply
    726,712.60x = 1,090,716.90 × 426,818.20
  4. Step 4: Simplify right side
    726,712.60x = 465,537,823,967.58
  5. Step 5: Solve for x
    x = 465,537,823,967.58/726,712.60
  6. Step 6: Final answer
    x = 640,607.89

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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.