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Finding the Fourth Proportional to 615,820.40, 922,175.40 and 404,313.20

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Solution

The fourth proportional to 615,820.40, 922,175.40 and 404,313.20 is: 605,448.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,820.40 : 922,175.40 = 404,313.20 : x
  2. Step 2: Convert to fraction form
    615,820.40/922,175.40 = 404,313.20/x
  3. Step 3: Cross multiply
    615,820.40x = 922,175.40 × 404,313.20
  4. Step 4: Simplify right side
    615,820.40x = 372,847,686,935.28
  5. Step 5: Solve for x
    x = 372,847,686,935.28/615,820.40
  6. Step 6: Final answer
    x = 605,448.74

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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.