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Finding the Fourth Proportional to 615,145.96, 849,056.10 and 347,029.48

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Solution

The fourth proportional to 615,145.96, 849,056.10 and 347,029.48 is: 478,987.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,145.96 : 849,056.10 = 347,029.48 : x
  2. Step 2: Convert to fraction form
    615,145.96/849,056.10 = 347,029.48/x
  3. Step 3: Cross multiply
    615,145.96x = 849,056.10 × 347,029.48
  4. Step 4: Simplify right side
    615,145.96x = 294,647,496,873.83
  5. Step 5: Solve for x
    x = 294,647,496,873.83/615,145.96
  6. Step 6: Final answer
    x = 478,987.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.