Home / 385,821.52-579,621.60-369,878.56

Finding the Fourth Proportional to 385,821.52, 579,621.60 and 369,878.56

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Solution

The fourth proportional to 385,821.52, 579,621.60 and 369,878.56 is: 555,670.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,821.52 : 579,621.60 = 369,878.56 : x
  2. Step 2: Convert to fraction form
    385,821.52/579,621.60 = 369,878.56/x
  3. Step 3: Cross multiply
    385,821.52x = 579,621.60 × 369,878.56
  4. Step 4: Simplify right side
    385,821.52x = 214,389,602,752.90
  5. Step 5: Solve for x
    x = 214,389,602,752.90/385,821.52
  6. Step 6: Final answer
    x = 555,670.41

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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.