Home / 642,384.47-964,012.74-343,079.85

Finding the Fourth Proportional to 642,384.47, 964,012.74 and 343,079.85

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Solution

The fourth proportional to 642,384.47, 964,012.74 and 343,079.85 is: 514,852.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,384.47 : 964,012.74 = 343,079.85 : x
  2. Step 2: Convert to fraction form
    642,384.47/964,012.74 = 343,079.85/x
  3. Step 3: Cross multiply
    642,384.47x = 964,012.74 × 343,079.85
  4. Step 4: Simplify right side
    642,384.47x = 330,733,350,495.61
  5. Step 5: Solve for x
    x = 330,733,350,495.61/642,384.47
  6. Step 6: Final answer
    x = 514,852.65

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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.