Home / 684,392.40-1,026,569.40-310,414.80

Finding the Fourth Proportional to 684,392.40, 1,026,569.40 and 310,414.80

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Solution

The fourth proportional to 684,392.40, 1,026,569.40 and 310,414.80 is: 465,613.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,392.40 : 1,026,569.40 = 310,414.80 : x
  2. Step 2: Convert to fraction form
    684,392.40/1,026,569.40 = 310,414.80/x
  3. Step 3: Cross multiply
    684,392.40x = 1,026,569.40 × 310,414.80
  4. Step 4: Simplify right side
    684,392.40x = 318,662,334,987.12
  5. Step 5: Solve for x
    x = 318,662,334,987.12/684,392.40
  6. Step 6: Final answer
    x = 465,613.49

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Half scale
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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.