Home / 688,066.72-949,534.40-382,143.84

Finding the Fourth Proportional to 688,066.72, 949,534.40 and 382,143.84

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Solution

The fourth proportional to 688,066.72, 949,534.40 and 382,143.84 is: 527,359.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,066.72 : 949,534.40 = 382,143.84 : x
  2. Step 2: Convert to fraction form
    688,066.72/949,534.40 = 382,143.84/x
  3. Step 3: Cross multiply
    688,066.72x = 949,534.40 × 382,143.84
  4. Step 4: Simplify right side
    688,066.72x = 362,858,721,828.10
  5. Step 5: Solve for x
    x = 362,858,721,828.10/688,066.72
  6. Step 6: Final answer
    x = 527,359.79

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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.