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Finding the Fourth Proportional to 706,963.12, 975,601.32 and 420,476.88

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Solution

The fourth proportional to 706,963.12, 975,601.32 and 420,476.88 is: 580,253.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,963.12 : 975,601.32 = 420,476.88 : x
  2. Step 2: Convert to fraction form
    706,963.12/975,601.32 = 420,476.88/x
  3. Step 3: Cross multiply
    706,963.12x = 975,601.32 × 420,476.88
  4. Step 4: Simplify right side
    706,963.12x = 410,217,799,157.48
  5. Step 5: Solve for x
    x = 410,217,799,157.48/706,963.12
  6. Step 6: Final answer
    x = 580,253.46

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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.