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Finding the Fourth Proportional to 686,751, 1,030,410 and 370,835.88

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Solution

The fourth proportional to 686,751, 1,030,410 and 370,835.88 is: 556,406.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,751 : 1,030,410 = 370,835.88 : x
  2. Step 2: Convert to fraction form
    686,751/1,030,410 = 370,835.88/x
  3. Step 3: Cross multiply
    686,751x = 1,030,410 × 370,835.88
  4. Step 4: Simplify right side
    686,751x = 382,112,999,110.80
  5. Step 5: Solve for x
    x = 382,112,999,110.80/686,751
  6. Step 6: Final answer
    x = 556,406.91

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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.