Home / 684,292.80-1,026,439.20-310,315.80

Finding the Fourth Proportional to 684,292.80, 1,026,439.20 and 310,315.80

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Solution

The fourth proportional to 684,292.80, 1,026,439.20 and 310,315.80 is: 465,473.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,292.80 : 1,026,439.20 = 310,315.80 : x
  2. Step 2: Convert to fraction form
    684,292.80/1,026,439.20 = 310,315.80/x
  3. Step 3: Cross multiply
    684,292.80x = 1,026,439.20 × 310,315.80
  4. Step 4: Simplify right side
    684,292.80x = 318,520,301,499.36
  5. Step 5: Solve for x
    x = 318,520,301,499.36/684,292.80
  6. Step 6: Final answer
    x = 465,473.70

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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.