Home / 684,423.47-1,026,779.76-257,950.27

Finding the Fourth Proportional to 684,423.47, 1,026,779.76 and 257,950.27

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Solution

The fourth proportional to 684,423.47, 1,026,779.76 and 257,950.27 is: 386,979.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,423.47 : 1,026,779.76 = 257,950.27 : x
  2. Step 2: Convert to fraction form
    684,423.47/1,026,779.76 = 257,950.27/x
  3. Step 3: Cross multiply
    684,423.47x = 1,026,779.76 × 257,950.27
  4. Step 4: Simplify right side
    684,423.47x = 264,858,113,755.59
  5. Step 5: Solve for x
    x = 264,858,113,755.59/684,423.47
  6. Step 6: Final answer
    x = 386,979.88

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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.