Home / 684,029.94-944,055.15-393,635.55

Finding the Fourth Proportional to 684,029.94, 944,055.15 and 393,635.55

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Solution

The fourth proportional to 684,029.94, 944,055.15 and 393,635.55 is: 543,271.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,029.94 : 944,055.15 = 393,635.55 : x
  2. Step 2: Convert to fraction form
    684,029.94/944,055.15 = 393,635.55/x
  3. Step 3: Cross multiply
    684,029.94x = 944,055.15 × 393,635.55
  4. Step 4: Simplify right side
    684,029.94x = 371,613,668,200.58
  5. Step 5: Solve for x
    x = 371,613,668,200.58/684,029.94
  6. Step 6: Final answer
    x = 543,271.06

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Half scale
Find fourth proportional to 1,368,059.88, 1,888,110.30 and 787,271.10
Double scale
Find fourth proportional to 684,030.94, 944,056.53 and 393,636.55
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.