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Finding the Fourth Proportional to 615,878.64, 849,887.64 and 343,942.20

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Solution

The fourth proportional to 615,878.64, 849,887.64 and 343,942.20 is: 474,626.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,878.64 : 849,887.64 = 343,942.20 : x
  2. Step 2: Convert to fraction form
    615,878.64/849,887.64 = 343,942.20/x
  3. Step 3: Cross multiply
    615,878.64x = 849,887.64 × 343,942.20
  4. Step 4: Simplify right side
    615,878.64x = 292,312,224,654.41
  5. Step 5: Solve for x
    x = 292,312,224,654.41/615,878.64
  6. Step 6: Final answer
    x = 474,626.34

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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.