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Finding the Fourth Proportional to 647,587.60, 971,381.40 and 367,651.60

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Solution

The fourth proportional to 647,587.60, 971,381.40 and 367,651.60 is: 551,477.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,587.60 : 971,381.40 = 367,651.60 : x
  2. Step 2: Convert to fraction form
    647,587.60/971,381.40 = 367,651.60/x
  3. Step 3: Cross multiply
    647,587.60x = 971,381.40 × 367,651.60
  4. Step 4: Simplify right side
    647,587.60x = 357,129,925,920.24
  5. Step 5: Solve for x
    x = 357,129,925,920.24/647,587.60
  6. Step 6: Final answer
    x = 551,477.40

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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.