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Finding the Fourth Proportional to 652,817.40, 979,222.68 and 355,189.94

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Solution

The fourth proportional to 652,817.40, 979,222.68 and 355,189.94 is: 532,783.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,817.40 : 979,222.68 = 355,189.94 : x
  2. Step 2: Convert to fraction form
    652,817.40/979,222.68 = 355,189.94/x
  3. Step 3: Cross multiply
    652,817.40x = 979,222.68 × 355,189.94
  4. Step 4: Simplify right side
    652,817.40x = 347,810,044,955.84
  5. Step 5: Solve for x
    x = 347,810,044,955.84/652,817.40
  6. Step 6: Final answer
    x = 532,783.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.