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Finding the Fourth Proportional to 570,954.61, 787,945.49 and 316,306.81

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Solution

The fourth proportional to 570,954.61, 787,945.49 and 316,306.81 is: 436,518.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,954.61 : 787,945.49 = 316,306.81 : x
  2. Step 2: Convert to fraction form
    570,954.61/787,945.49 = 316,306.81/x
  3. Step 3: Cross multiply
    570,954.61x = 787,945.49 × 316,306.81
  4. Step 4: Simplify right side
    570,954.61x = 249,232,524,395.79
  5. Step 5: Solve for x
    x = 249,232,524,395.79/570,954.61
  6. Step 6: Final answer
    x = 436,518.98

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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.