Home / 686,972.75-1,030,461.80-287,333.19

Finding the Fourth Proportional to 686,972.75, 1,030,461.80 and 287,333.19

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Solution

The fourth proportional to 686,972.75, 1,030,461.80 and 287,333.19 is: 431,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,972.75 : 1,030,461.80 = 287,333.19 : x
  2. Step 2: Convert to fraction form
    686,972.75/1,030,461.80 = 287,333.19/x
  3. Step 3: Cross multiply
    686,972.75x = 1,030,461.80 × 287,333.19
  4. Step 4: Simplify right side
    686,972.75x = 296,085,874,730.48
  5. Step 5: Solve for x
    x = 296,085,874,730.48/686,972.75
  6. Step 6: Final answer
    x = 431,000.90

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1.5x scale

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.