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Finding the Fourth Proportional to 684,558.40, 1,026,818.40 and 310,580.80

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Solution

The fourth proportional to 684,558.40, 1,026,818.40 and 310,580.80 is: 465,862.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,558.40 : 1,026,818.40 = 310,580.80 : x
  2. Step 2: Convert to fraction form
    684,558.40/1,026,818.40 = 310,580.80/x
  3. Step 3: Cross multiply
    684,558.40x = 1,026,818.40 × 310,580.80
  4. Step 4: Simplify right side
    684,558.40x = 318,910,080,126.72
  5. Step 5: Solve for x
    x = 318,910,080,126.72/684,558.40
  6. Step 6: Final answer
    x = 465,862.49

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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.