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Finding the Fourth Proportional to 570,071.68, 786,983.78 and 328,307.57

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Solution

The fourth proportional to 570,071.68, 786,983.78 and 328,307.57 is: 453,228.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,071.68 : 786,983.78 = 328,307.57 : x
  2. Step 2: Convert to fraction form
    570,071.68/786,983.78 = 328,307.57/x
  3. Step 3: Cross multiply
    570,071.68x = 786,983.78 × 328,307.57
  4. Step 4: Simplify right side
    570,071.68x = 258,372,732,441.22
  5. Step 5: Solve for x
    x = 258,372,732,441.22/570,071.68
  6. Step 6: Final answer
    x = 453,228.50

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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.