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Finding the Fourth Proportional to 570,607.37, 787,428.55 and 315,953.09

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Solution

The fourth proportional to 570,607.37, 787,428.55 and 315,953.09 is: 436,009.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,607.37 : 787,428.55 = 315,953.09 : x
  2. Step 2: Convert to fraction form
    570,607.37/787,428.55 = 315,953.09/x
  3. Step 3: Cross multiply
    570,607.37x = 787,428.55 × 315,953.09
  4. Step 4: Simplify right side
    570,607.37x = 248,790,478,799.69
  5. Step 5: Solve for x
    x = 248,790,478,799.69/570,607.37
  6. Step 6: Final answer
    x = 436,009.93

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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.