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Finding the Fourth Proportional to 615,311.80, 922,967.70 and 403,804.60

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Solution

The fourth proportional to 615,311.80, 922,967.70 and 403,804.60 is: 605,706.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,311.80 : 922,967.70 = 403,804.60 : x
  2. Step 2: Convert to fraction form
    615,311.80/922,967.70 = 403,804.60/x
  3. Step 3: Cross multiply
    615,311.80x = 922,967.70 × 403,804.60
  4. Step 4: Simplify right side
    615,311.80x = 372,698,602,911.42
  5. Step 5: Solve for x
    x = 372,698,602,911.42/615,311.80
  6. Step 6: Final answer
    x = 605,706.90

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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.