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Finding the Fourth Proportional to 559,934.70, 839,902.05 and 307,992.30

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Solution

The fourth proportional to 559,934.70, 839,902.05 and 307,992.30 is: 461,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,934.70 : 839,902.05 = 307,992.30 : x
  2. Step 2: Convert to fraction form
    559,934.70/839,902.05 = 307,992.30/x
  3. Step 3: Cross multiply
    559,934.70x = 839,902.05 × 307,992.30
  4. Step 4: Simplify right side
    559,934.70x = 258,683,364,154.22
  5. Step 5: Solve for x
    x = 258,683,364,154.22/559,934.70
  6. Step 6: Final answer
    x = 461,988.45

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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.