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Finding the Fourth Proportional to 492,347.70, 687,887.10 and 492,347.70

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Solution

The fourth proportional to 492,347.70, 687,887.10 and 492,347.70 is: 687,887.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,347.70 : 687,887.10 = 492,347.70 : x
  2. Step 2: Convert to fraction form
    492,347.70/687,887.10 = 492,347.70/x
  3. Step 3: Cross multiply
    492,347.70x = 687,887.10 × 492,347.70
  4. Step 4: Simplify right side
    492,347.70x = 338,679,631,544.67
  5. Step 5: Solve for x
    x = 338,679,631,544.67/492,347.70
  6. Step 6: Final answer
    x = 687,887.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.