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Finding the Fourth Proportional to 615,506.12, 849,395.22 and 343,558.28

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Solution

The fourth proportional to 615,506.12, 849,395.22 and 343,558.28 is: 474,108.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,506.12 : 849,395.22 = 343,558.28 : x
  2. Step 2: Convert to fraction form
    615,506.12/849,395.22 = 343,558.28/x
  3. Step 3: Cross multiply
    615,506.12x = 849,395.22 × 343,558.28
  4. Step 4: Simplify right side
    615,506.12x = 291,816,760,823.42
  5. Step 5: Solve for x
    x = 291,816,760,823.42/615,506.12
  6. Step 6: Final answer
    x = 474,108.63

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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.