Home / 830,078.10-1,245,117.15-494,154.90

Finding the Fourth Proportional to 830,078.10, 1,245,117.15 and 494,154.90

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Solution

The fourth proportional to 830,078.10, 1,245,117.15 and 494,154.90 is: 741,232.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,078.10 : 1,245,117.15 = 494,154.90 : x
  2. Step 2: Convert to fraction form
    830,078.10/1,245,117.15 = 494,154.90/x
  3. Step 3: Cross multiply
    830,078.10x = 1,245,117.15 × 494,154.90
  4. Step 4: Simplify right side
    830,078.10x = 615,280,740,746.54
  5. Step 5: Solve for x
    x = 615,280,740,746.54/830,078.10
  6. Step 6: Final answer
    x = 741,232.35

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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.