Home / 688,507.60-1,032,761.40-419,069.20

Finding the Fourth Proportional to 688,507.60, 1,032,761.40 and 419,069.20

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Solution

The fourth proportional to 688,507.60, 1,032,761.40 and 419,069.20 is: 628,603.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,507.60 : 1,032,761.40 = 419,069.20 : x
  2. Step 2: Convert to fraction form
    688,507.60/1,032,761.40 = 419,069.20/x
  3. Step 3: Cross multiply
    688,507.60x = 1,032,761.40 × 419,069.20
  4. Step 4: Simplify right side
    688,507.60x = 432,798,493,688.88
  5. Step 5: Solve for x
    x = 432,798,493,688.88/688,507.60
  6. Step 6: Final answer
    x = 628,603.80

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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.