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Finding the Fourth Proportional to 570,507.67, 787,329.62 and 315,886.87

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Solution

The fourth proportional to 570,507.67, 787,329.62 and 315,886.87 is: 435,939.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,507.67 : 787,329.62 = 315,886.87 : x
  2. Step 2: Convert to fraction form
    570,507.67/787,329.62 = 315,886.87/x
  3. Step 3: Cross multiply
    570,507.67x = 787,329.62 × 315,886.87
  4. Step 4: Simplify right side
    570,507.67x = 248,707,089,320.09
  5. Step 5: Solve for x
    x = 248,707,089,320.09/570,507.67
  6. Step 6: Final answer
    x = 435,939.96

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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.