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Finding the Fourth Proportional to 570,203.70, 786,883.20 and 308,559.03

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Solution

The fourth proportional to 570,203.70, 786,883.20 and 308,559.03 is: 425,812.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,203.70 : 786,883.20 = 308,559.03 : x
  2. Step 2: Convert to fraction form
    570,203.70/786,883.20 = 308,559.03/x
  3. Step 3: Cross multiply
    570,203.70x = 786,883.20 × 308,559.03
  4. Step 4: Simplify right side
    570,203.70x = 242,799,916,915.30
  5. Step 5: Solve for x
    x = 242,799,916,915.30/570,203.70
  6. Step 6: Final answer
    x = 425,812.59

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1.5x scale

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.