Home / 688,009.60-1,032,014.40-418,571.20

Finding the Fourth Proportional to 688,009.60, 1,032,014.40 and 418,571.20

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Solution

The fourth proportional to 688,009.60, 1,032,014.40 and 418,571.20 is: 627,856.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,009.60 : 1,032,014.40 = 418,571.20 : x
  2. Step 2: Convert to fraction form
    688,009.60/1,032,014.40 = 418,571.20/x
  3. Step 3: Cross multiply
    688,009.60x = 1,032,014.40 × 418,571.20
  4. Step 4: Simplify right side
    688,009.60x = 431,971,505,825.28
  5. Step 5: Solve for x
    x = 431,971,505,825.28/688,009.60
  6. Step 6: Final answer
    x = 627,856.80

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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.