Home / 687,848.49-949,184.64-381,909.06

Finding the Fourth Proportional to 687,848.49, 949,184.64 and 381,909.06

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Solution

The fourth proportional to 687,848.49, 949,184.64 and 381,909.06 is: 527,008.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,848.49 : 949,184.64 = 381,909.06 : x
  2. Step 2: Convert to fraction form
    687,848.49/949,184.64 = 381,909.06/x
  3. Step 3: Cross multiply
    687,848.49x = 949,184.64 × 381,909.06
  4. Step 4: Simplify right side
    687,848.49x = 362,502,213,628.84
  5. Step 5: Solve for x
    x = 362,502,213,628.84/687,848.49
  6. Step 6: Final answer
    x = 527,008.81

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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.