Home / 885,742.60-1,328,613.90-487,611.40

Finding the Fourth Proportional to 885,742.60, 1,328,613.90 and 487,611.40

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Solution

The fourth proportional to 885,742.60, 1,328,613.90 and 487,611.40 is: 731,417.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,742.60 : 1,328,613.90 = 487,611.40 : x
  2. Step 2: Convert to fraction form
    885,742.60/1,328,613.90 = 487,611.40/x
  3. Step 3: Cross multiply
    885,742.60x = 1,328,613.90 × 487,611.40
  4. Step 4: Simplify right side
    885,742.60x = 647,847,283,838.46
  5. Step 5: Solve for x
    x = 647,847,283,838.46/885,742.60
  6. Step 6: Final answer
    x = 731,417.10

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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.