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Finding the Fourth Proportional to 615,731.20, 849,700.86 and 343,803.64

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Solution

The fourth proportional to 615,731.20, 849,700.86 and 343,803.64 is: 474,444.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,731.20 : 849,700.86 = 343,803.64 : x
  2. Step 2: Convert to fraction form
    615,731.20/849,700.86 = 343,803.64/x
  3. Step 3: Cross multiply
    615,731.20x = 849,700.86 × 343,803.64
  4. Step 4: Simplify right side
    615,731.20x = 292,130,248,579.13
  5. Step 5: Solve for x
    x = 292,130,248,579.13/615,731.20
  6. Step 6: Final answer
    x = 474,444.45

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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.