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Finding the Fourth Proportional to 570,476.76, 787,227.97 and 312,304.20

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Solution

The fourth proportional to 570,476.76, 787,227.97 and 312,304.20 is: 430,963.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,476.76 : 787,227.97 = 312,304.20 : x
  2. Step 2: Convert to fraction form
    570,476.76/787,227.97 = 312,304.20/x
  3. Step 3: Cross multiply
    570,476.76x = 787,227.97 × 312,304.20
  4. Step 4: Simplify right side
    570,476.76x = 245,854,601,388.47
  5. Step 5: Solve for x
    x = 245,854,601,388.47/570,476.76
  6. Step 6: Final answer
    x = 430,963.40

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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.