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Finding the Fourth Proportional to 557,380.90, 836,071.35 and 520,056.10

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Solution

The fourth proportional to 557,380.90, 836,071.35 and 520,056.10 is: 780,084.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,380.90 : 836,071.35 = 520,056.10 : x
  2. Step 2: Convert to fraction form
    557,380.90/836,071.35 = 520,056.10/x
  3. Step 3: Cross multiply
    557,380.90x = 836,071.35 × 520,056.10
  4. Step 4: Simplify right side
    557,380.90x = 434,804,005,602.74
  5. Step 5: Solve for x
    x = 434,804,005,602.74/557,380.90
  6. Step 6: Final answer
    x = 780,084.15

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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.