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Finding the Fourth Proportional to 570,365.28, 786,911.28 and 328,641.60

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Solution

The fourth proportional to 570,365.28, 786,911.28 and 328,641.60 is: 453,414.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,365.28 : 786,911.28 = 328,641.60 : x
  2. Step 2: Convert to fraction form
    570,365.28/786,911.28 = 328,641.60/x
  3. Step 3: Cross multiply
    570,365.28x = 786,911.28 × 328,641.60
  4. Step 4: Simplify right side
    570,365.28x = 258,611,782,117.25
  5. Step 5: Solve for x
    x = 258,611,782,117.25/570,365.28
  6. Step 6: Final answer
    x = 453,414.31

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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.