Home / 570,209.82-786,914.25-315,561.09

Finding the Fourth Proportional to 570,209.82, 786,914.25 and 315,561.09

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Solution

The fourth proportional to 570,209.82, 786,914.25 and 315,561.09 is: 435,487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,209.82 : 786,914.25 = 315,561.09 : x
  2. Step 2: Convert to fraction form
    570,209.82/786,914.25 = 315,561.09/x
  3. Step 3: Cross multiply
    570,209.82x = 786,914.25 × 315,561.09
  4. Step 4: Simplify right side
    570,209.82x = 248,319,518,466.53
  5. Step 5: Solve for x
    x = 248,319,518,466.53/570,209.82
  6. Step 6: Final answer
    x = 435,487.97

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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.