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Finding the Fourth Proportional to 615,779.90, 922,114.65 and 404,272.70

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Solution

The fourth proportional to 615,779.90, 922,114.65 and 404,272.70 is: 605,388.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,779.90 : 922,114.65 = 404,272.70 : x
  2. Step 2: Convert to fraction form
    615,779.90/922,114.65 = 404,272.70/x
  3. Step 3: Cross multiply
    615,779.90x = 922,114.65 × 404,272.70
  4. Step 4: Simplify right side
    615,779.90x = 372,785,779,265.06
  5. Step 5: Solve for x
    x = 372,785,779,265.06/615,779.90
  6. Step 6: Final answer
    x = 605,388.03

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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.