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Finding the Fourth Proportional to 570,282.66, 786,987.09 and 315,625.14

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Solution

The fourth proportional to 570,282.66, 786,987.09 and 315,625.14 is: 435,561.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,282.66 : 786,987.09 = 315,625.14 : x
  2. Step 2: Convert to fraction form
    570,282.66/786,987.09 = 315,625.14/x
  3. Step 3: Cross multiply
    570,282.66x = 786,987.09 × 315,625.14
  4. Step 4: Simplify right side
    570,282.66x = 248,392,910,459.44
  5. Step 5: Solve for x
    x = 248,392,910,459.44/570,282.66
  6. Step 6: Final answer
    x = 435,561.04

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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.