Home / 686,923.90-1,029,905.85-406,296.70

Finding the Fourth Proportional to 686,923.90, 1,029,905.85 and 406,296.70

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Solution

The fourth proportional to 686,923.90, 1,029,905.85 and 406,296.70 is: 609,161.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,923.90 : 1,029,905.85 = 406,296.70 : x
  2. Step 2: Convert to fraction form
    686,923.90/1,029,905.85 = 406,296.70/x
  3. Step 3: Cross multiply
    686,923.90x = 1,029,905.85 × 406,296.70
  4. Step 4: Simplify right side
    686,923.90x = 418,447,348,165.70
  5. Step 5: Solve for x
    x = 418,447,348,165.70/686,923.90
  6. Step 6: Final answer
    x = 609,161.14

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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.