Home / 579,141.40-868,307.10-342,362.20

Finding the Fourth Proportional to 579,141.40, 868,307.10 and 342,362.20

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Solution

The fourth proportional to 579,141.40, 868,307.10 and 342,362.20 is: 513,303.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,141.40 : 868,307.10 = 342,362.20 : x
  2. Step 2: Convert to fraction form
    579,141.40/868,307.10 = 342,362.20/x
  3. Step 3: Cross multiply
    579,141.40x = 868,307.10 × 342,362.20
  4. Step 4: Simplify right side
    579,141.40x = 297,275,529,031.62
  5. Step 5: Solve for x
    x = 297,275,529,031.62/579,141.40
  6. Step 6: Final answer
    x = 513,303.88

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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.