Home / 615,284.40-921,371.40-403,777.20

Finding the Fourth Proportional to 615,284.40, 921,371.40 and 403,777.20

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Solution

The fourth proportional to 615,284.40, 921,371.40 and 403,777.20 is: 604,645.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,284.40 : 921,371.40 = 403,777.20 : x
  2. Step 2: Convert to fraction form
    615,284.40/921,371.40 = 403,777.20/x
  3. Step 3: Cross multiply
    615,284.40x = 921,371.40 × 403,777.20
  4. Step 4: Simplify right side
    615,284.40x = 372,028,764,052.08
  5. Step 5: Solve for x
    x = 372,028,764,052.08/615,284.40
  6. Step 6: Final answer
    x = 604,645.21

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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.