Home / 686,101.60-1,029,152.40-212,834.80

Finding the Fourth Proportional to 686,101.60, 1,029,152.40 and 212,834.80

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Solution

The fourth proportional to 686,101.60, 1,029,152.40 and 212,834.80 is: 319,252.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,101.60 : 1,029,152.40 = 212,834.80 : x
  2. Step 2: Convert to fraction form
    686,101.60/1,029,152.40 = 212,834.80/x
  3. Step 3: Cross multiply
    686,101.60x = 1,029,152.40 × 212,834.80
  4. Step 4: Simplify right side
    686,101.60x = 219,039,445,223.52
  5. Step 5: Solve for x
    x = 219,039,445,223.52/686,101.60
  6. Step 6: Final answer
    x = 319,252.20

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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.