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Finding the Fourth Proportional to 570,133.76, 786,751.99 and 315,469.76

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Solution

The fourth proportional to 570,133.76, 786,751.99 and 315,469.76 is: 435,330.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,133.76 : 786,751.99 = 315,469.76 : x
  2. Step 2: Convert to fraction form
    570,133.76/786,751.99 = 315,469.76/x
  3. Step 3: Cross multiply
    570,133.76x = 786,751.99 × 315,469.76
  4. Step 4: Simplify right side
    570,133.76x = 248,196,456,742.39
  5. Step 5: Solve for x
    x = 248,196,456,742.39/570,133.76
  6. Step 6: Final answer
    x = 435,330.23

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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.