Home / 684,449.47-1,025,950.21-257,800.69

Finding the Fourth Proportional to 684,449.47, 1,025,950.21 and 257,800.69

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Solution

The fourth proportional to 684,449.47, 1,025,950.21 and 257,800.69 is: 386,428.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,449.47 : 1,025,950.21 = 257,800.69 : x
  2. Step 2: Convert to fraction form
    684,449.47/1,025,950.21 = 257,800.69/x
  3. Step 3: Cross multiply
    684,449.47x = 1,025,950.21 × 257,800.69
  4. Step 4: Simplify right side
    684,449.47x = 264,490,670,166.00
  5. Step 5: Solve for x
    x = 264,490,670,166.00/684,449.47
  6. Step 6: Final answer
    x = 386,428.34

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Double scale
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Similar ratio
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1.5x scale

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.