Home / 686,529.40-1,029,794.10-313,281.40

Finding the Fourth Proportional to 686,529.40, 1,029,794.10 and 313,281.40

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Solution

The fourth proportional to 686,529.40, 1,029,794.10 and 313,281.40 is: 469,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,529.40 : 1,029,794.10 = 313,281.40 : x
  2. Step 2: Convert to fraction form
    686,529.40/1,029,794.10 = 313,281.40/x
  3. Step 3: Cross multiply
    686,529.40x = 1,029,794.10 × 313,281.40
  4. Step 4: Simplify right side
    686,529.40x = 322,615,337,359.74
  5. Step 5: Solve for x
    x = 322,615,337,359.74/686,529.40
  6. Step 6: Final answer
    x = 469,922.10

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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.