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Finding the Fourth Proportional to 686,771.12, 1,030,440.12 and 370,856

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Solution

The fourth proportional to 686,771.12, 1,030,440.12 and 370,856 is: 556,437.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,771.12 : 1,030,440.12 = 370,856 : x
  2. Step 2: Convert to fraction form
    686,771.12/1,030,440.12 = 370,856/x
  3. Step 3: Cross multiply
    686,771.12x = 1,030,440.12 × 370,856
  4. Step 4: Simplify right side
    686,771.12x = 382,144,901,142.72
  5. Step 5: Solve for x
    x = 382,144,901,142.72/686,771.12
  6. Step 6: Final answer
    x = 556,437.06

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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.