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Finding the Fourth Proportional to 616,139.40, 922,653.90 and 404,632.20

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Solution

The fourth proportional to 616,139.40, 922,653.90 and 404,632.20 is: 605,926.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,139.40 : 922,653.90 = 404,632.20 : x
  2. Step 2: Convert to fraction form
    616,139.40/922,653.90 = 404,632.20/x
  3. Step 3: Cross multiply
    616,139.40x = 922,653.90 × 404,632.20
  4. Step 4: Simplify right side
    616,139.40x = 373,335,477,395.58
  5. Step 5: Solve for x
    x = 373,335,477,395.58/616,139.40
  6. Step 6: Final answer
    x = 605,926.97

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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.