Home / 686,000.40-1,029,583.80-307,503.60

Finding the Fourth Proportional to 686,000.40, 1,029,583.80 and 307,503.60

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Solution

The fourth proportional to 686,000.40, 1,029,583.80 and 307,503.60 is: 461,516.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,000.40 : 1,029,583.80 = 307,503.60 : x
  2. Step 2: Convert to fraction form
    686,000.40/1,029,583.80 = 307,503.60/x
  3. Step 3: Cross multiply
    686,000.40x = 1,029,583.80 × 307,503.60
  4. Step 4: Simplify right side
    686,000.40x = 316,600,725,001.68
  5. Step 5: Solve for x
    x = 316,600,725,001.68/686,000.40
  6. Step 6: Final answer
    x = 461,516.82

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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.