Home / 686,721.60-1,028,008.80-603,777.60

Finding the Fourth Proportional to 686,721.60, 1,028,008.80 and 603,777.60

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Solution

The fourth proportional to 686,721.60, 1,028,008.80 and 603,777.60 is: 903,843.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,721.60 : 1,028,008.80 = 603,777.60 : x
  2. Step 2: Convert to fraction form
    686,721.60/1,028,008.80 = 603,777.60/x
  3. Step 3: Cross multiply
    686,721.60x = 1,028,008.80 × 603,777.60
  4. Step 4: Simplify right side
    686,721.60x = 620,688,686,042.88
  5. Step 5: Solve for x
    x = 620,688,686,042.88/686,721.60
  6. Step 6: Final answer
    x = 903,843.25

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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.