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Finding the Fourth Proportional to 570,051.01, 786,658.25 and 311,926.89

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Solution

The fourth proportional to 570,051.01, 786,658.25 and 311,926.89 is: 430,452.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,051.01 : 786,658.25 = 311,926.89 : x
  2. Step 2: Convert to fraction form
    570,051.01/786,658.25 = 311,926.89/x
  3. Step 3: Cross multiply
    570,051.01x = 786,658.25 × 311,926.89
  4. Step 4: Simplify right side
    570,051.01x = 245,379,862,195.16
  5. Step 5: Solve for x
    x = 245,379,862,195.16/570,051.01
  6. Step 6: Final answer
    x = 430,452.47

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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.