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Finding the Fourth Proportional to 515,840.40, 773,760.60 and 358,376.40

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Solution

The fourth proportional to 515,840.40, 773,760.60 and 358,376.40 is: 537,564.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,840.40 : 773,760.60 = 358,376.40 : x
  2. Step 2: Convert to fraction form
    515,840.40/773,760.60 = 358,376.40/x
  3. Step 3: Cross multiply
    515,840.40x = 773,760.60 × 358,376.40
  4. Step 4: Simplify right side
    515,840.40x = 277,297,538,289.84
  5. Step 5: Solve for x
    x = 277,297,538,289.84/515,840.40
  6. Step 6: Final answer
    x = 537,564.60

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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.