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Finding the Fourth Proportional to 570,111.48, 786,836.88 and 328,347

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Solution

The fourth proportional to 570,111.48, 786,836.88 and 328,347 is: 453,166.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,111.48 : 786,836.88 = 328,347 : x
  2. Step 2: Convert to fraction form
    570,111.48/786,836.88 = 328,347/x
  3. Step 3: Cross multiply
    570,111.48x = 786,836.88 × 328,347
  4. Step 4: Simplify right side
    570,111.48x = 258,355,529,037.36
  5. Step 5: Solve for x
    x = 258,355,529,037.36/570,111.48
  6. Step 6: Final answer
    x = 453,166.68

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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.