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Finding the Fourth Proportional to 615,646.60, 922,433.10 and 578,321.80

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Solution

The fourth proportional to 615,646.60, 922,433.10 and 578,321.80 is: 866,508.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,646.60 : 922,433.10 = 578,321.80 : x
  2. Step 2: Convert to fraction form
    615,646.60/922,433.10 = 578,321.80/x
  3. Step 3: Cross multiply
    615,646.60x = 922,433.10 × 578,321.80
  4. Step 4: Simplify right side
    615,646.60x = 533,463,170,771.58
  5. Step 5: Solve for x
    x = 533,463,170,771.58/615,646.60
  6. Step 6: Final answer
    x = 866,508.76

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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.