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Finding the Fourth Proportional to 518,364.70, 777,547.05 and 488,840.20

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Solution

The fourth proportional to 518,364.70, 777,547.05 and 488,840.20 is: 733,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,364.70 : 777,547.05 = 488,840.20 : x
  2. Step 2: Convert to fraction form
    518,364.70/777,547.05 = 488,840.20/x
  3. Step 3: Cross multiply
    518,364.70x = 777,547.05 × 488,840.20
  4. Step 4: Simplify right side
    518,364.70x = 380,096,255,431.41
  5. Step 5: Solve for x
    x = 380,096,255,431.41/518,364.70
  6. Step 6: Final answer
    x = 733,260.30

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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.