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Finding the Fourth Proportional to 626,835.48, 865,009.46 and 340,349.42

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Solution

The fourth proportional to 626,835.48, 865,009.46 and 340,349.42 is: 469,669.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,835.48 : 865,009.46 = 340,349.42 : x
  2. Step 2: Convert to fraction form
    626,835.48/865,009.46 = 340,349.42/x
  3. Step 3: Cross multiply
    626,835.48x = 865,009.46 × 340,349.42
  4. Step 4: Simplify right side
    626,835.48x = 294,405,468,005.51
  5. Step 5: Solve for x
    x = 294,405,468,005.51/626,835.48
  6. Step 6: Final answer
    x = 469,669.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.