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Finding the Fourth Proportional to 615,391.90, 922,686.90 and 552,406.30

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Solution

The fourth proportional to 615,391.90, 922,686.90 and 552,406.30 is: 828,249.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,391.90 : 922,686.90 = 552,406.30 : x
  2. Step 2: Convert to fraction form
    615,391.90/922,686.90 = 552,406.30/x
  3. Step 3: Cross multiply
    615,391.90x = 922,686.90 × 552,406.30
  4. Step 4: Simplify right side
    615,391.90x = 509,698,056,487.47
  5. Step 5: Solve for x
    x = 509,698,056,487.47/615,391.90
  6. Step 6: Final answer
    x = 828,249.54

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1.5x scale

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.