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Finding the Fourth Proportional to 808,412.40, 1,212,521.40 and 335,048.40

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Solution

The fourth proportional to 808,412.40, 1,212,521.40 and 335,048.40 is: 502,532.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,412.40 : 1,212,521.40 = 335,048.40 : x
  2. Step 2: Convert to fraction form
    808,412.40/1,212,521.40 = 335,048.40/x
  3. Step 3: Cross multiply
    808,412.40x = 1,212,521.40 × 335,048.40
  4. Step 4: Simplify right side
    808,412.40x = 406,253,355,035.76
  5. Step 5: Solve for x
    x = 406,253,355,035.76/808,412.40
  6. Step 6: Final answer
    x = 502,532.32

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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.