Home / 579,320.45-869,220.48-312,767.47

Finding the Fourth Proportional to 579,320.45, 869,220.48 and 312,767.47

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Solution

The fourth proportional to 579,320.45, 869,220.48 and 312,767.47 is: 469,280.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,320.45 : 869,220.48 = 312,767.47 : x
  2. Step 2: Convert to fraction form
    579,320.45/869,220.48 = 312,767.47/x
  3. Step 3: Cross multiply
    579,320.45x = 869,220.48 × 312,767.47
  4. Step 4: Simplify right side
    579,320.45x = 271,863,884,491.85
  5. Step 5: Solve for x
    x = 271,863,884,491.85/579,320.45
  6. Step 6: Final answer
    x = 469,280.67

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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.