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Finding the Fourth Proportional to 615,898.80, 923,448.60 and 260,816.40

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Solution

The fourth proportional to 615,898.80, 923,448.60 and 260,816.40 is: 391,055.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,898.80 : 923,448.60 = 260,816.40 : x
  2. Step 2: Convert to fraction form
    615,898.80/923,448.60 = 260,816.40/x
  3. Step 3: Cross multiply
    615,898.80x = 923,448.60 × 260,816.40
  4. Step 4: Simplify right side
    615,898.80x = 240,850,539,437.04
  5. Step 5: Solve for x
    x = 240,850,539,437.04/615,898.80
  6. Step 6: Final answer
    x = 391,055.38

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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.