Home / 579,943.83-869,478.35-380,314.47

Finding the Fourth Proportional to 579,943.83, 869,478.35 and 380,314.47

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Solution

The fourth proportional to 579,943.83, 869,478.35 and 380,314.47 is: 570,184.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,943.83 : 869,478.35 = 380,314.47 : x
  2. Step 2: Convert to fraction form
    579,943.83/869,478.35 = 380,314.47/x
  3. Step 3: Cross multiply
    579,943.83x = 869,478.35 × 380,314.47
  4. Step 4: Simplify right side
    579,943.83x = 330,675,195,955.15
  5. Step 5: Solve for x
    x = 330,675,195,955.15/579,943.83
  6. Step 6: Final answer
    x = 570,184.87

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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.