Home / 778,870.60-1,168,305.90-478,376.80

Finding the Fourth Proportional to 778,870.60, 1,168,305.90 and 478,376.80

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Solution

The fourth proportional to 778,870.60, 1,168,305.90 and 478,376.80 is: 717,565.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,870.60 : 1,168,305.90 = 478,376.80 : x
  2. Step 2: Convert to fraction form
    778,870.60/1,168,305.90 = 478,376.80/x
  3. Step 3: Cross multiply
    778,870.60x = 1,168,305.90 × 478,376.80
  4. Step 4: Simplify right side
    778,870.60x = 558,890,437,863.12
  5. Step 5: Solve for x
    x = 558,890,437,863.12/778,870.60
  6. Step 6: Final answer
    x = 717,565.20

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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.