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Finding the Fourth Proportional to 647,886.30, 971,829.45 and 310,869.60

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Solution

The fourth proportional to 647,886.30, 971,829.45 and 310,869.60 is: 466,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,886.30 : 971,829.45 = 310,869.60 : x
  2. Step 2: Convert to fraction form
    647,886.30/971,829.45 = 310,869.60/x
  3. Step 3: Cross multiply
    647,886.30x = 971,829.45 × 310,869.60
  4. Step 4: Simplify right side
    647,886.30x = 302,112,232,389.72
  5. Step 5: Solve for x
    x = 302,112,232,389.72/647,886.30
  6. Step 6: Final answer
    x = 466,304.40

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.