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Finding the Fourth Proportional to 540,784.60, 811,176.90 and 260,848.60

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Solution

The fourth proportional to 540,784.60, 811,176.90 and 260,848.60 is: 391,272.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,784.60 : 811,176.90 = 260,848.60 : x
  2. Step 2: Convert to fraction form
    540,784.60/811,176.90 = 260,848.60/x
  3. Step 3: Cross multiply
    540,784.60x = 811,176.90 × 260,848.60
  4. Step 4: Simplify right side
    540,784.60x = 211,594,358,717.34
  5. Step 5: Solve for x
    x = 211,594,358,717.34/540,784.60
  6. Step 6: Final answer
    x = 391,272.90

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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.