Home / 686,968.27-1,030,455.04-287,328.70

Finding the Fourth Proportional to 686,968.27, 1,030,455.04 and 287,328.70

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Solution

The fourth proportional to 686,968.27, 1,030,455.04 and 287,328.70 is: 430,994.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,968.27 : 1,030,455.04 = 287,328.70 : x
  2. Step 2: Convert to fraction form
    686,968.27/1,030,455.04 = 287,328.70/x
  3. Step 3: Cross multiply
    686,968.27x = 1,030,455.04 × 287,328.70
  4. Step 4: Simplify right side
    686,968.27x = 296,079,308,968.25
  5. Step 5: Solve for x
    x = 296,079,308,968.25/686,968.27
  6. Step 6: Final answer
    x = 430,994.15

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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.