Home / 686,530.40-1,029,488.40-265,666.40

Finding the Fourth Proportional to 686,530.40, 1,029,488.40 and 265,666.40

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Solution

The fourth proportional to 686,530.40, 1,029,488.40 and 265,666.40 is: 398,380.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,530.40 : 1,029,488.40 = 265,666.40 : x
  2. Step 2: Convert to fraction form
    686,530.40/1,029,488.40 = 265,666.40/x
  3. Step 3: Cross multiply
    686,530.40x = 1,029,488.40 × 265,666.40
  4. Step 4: Simplify right side
    686,530.40x = 273,500,477,069.76
  5. Step 5: Solve for x
    x = 273,500,477,069.76/686,530.40
  6. Step 6: Final answer
    x = 398,380.72

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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.