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Finding the Fourth Proportional to 570,614.73, 787,448.28 and 315,965.91

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Solution

The fourth proportional to 570,614.73, 787,448.28 and 315,965.91 is: 436,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,614.73 : 787,448.28 = 315,965.91 : x
  2. Step 2: Convert to fraction form
    570,614.73/787,448.28 = 315,965.91/x
  3. Step 3: Cross multiply
    570,614.73x = 787,448.28 × 315,965.91
  4. Step 4: Simplify right side
    570,614.73x = 248,806,812,368.14
  5. Step 5: Solve for x
    x = 248,806,812,368.14/570,614.73
  6. Step 6: Final answer
    x = 436,032.93

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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.