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Finding the Fourth Proportional to 570,040.98, 786,465.54 and 328,318.71

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Solution

The fourth proportional to 570,040.98, 786,465.54 and 328,318.71 is: 452,969.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,040.98 : 786,465.54 = 328,318.71 : x
  2. Step 2: Convert to fraction form
    570,040.98/786,465.54 = 328,318.71/x
  3. Step 3: Cross multiply
    570,040.98x = 786,465.54 × 328,318.71
  4. Step 4: Simplify right side
    570,040.98x = 258,211,351,552.25
  5. Step 5: Solve for x
    x = 258,211,351,552.25/570,040.98
  6. Step 6: Final answer
    x = 452,969.80

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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.