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Finding the Fourth Proportional to 615,723.90, 922,030.65 and 404,216.70

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Solution

The fourth proportional to 615,723.90, 922,030.65 and 404,216.70 is: 605,304.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,723.90 : 922,030.65 = 404,216.70 : x
  2. Step 2: Convert to fraction form
    615,723.90/922,030.65 = 404,216.70/x
  3. Step 3: Cross multiply
    615,723.90x = 922,030.65 × 404,216.70
  4. Step 4: Simplify right side
    615,723.90x = 372,700,186,641.86
  5. Step 5: Solve for x
    x = 372,700,186,641.86/615,723.90
  6. Step 6: Final answer
    x = 605,304.08

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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.