Home / 763,705.60-1,145,212.80-342,764.80

Finding the Fourth Proportional to 763,705.60, 1,145,212.80 and 342,764.80

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Solution

The fourth proportional to 763,705.60, 1,145,212.80 and 342,764.80 is: 513,992.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,705.60 : 1,145,212.80 = 342,764.80 : x
  2. Step 2: Convert to fraction form
    763,705.60/1,145,212.80 = 342,764.80/x
  3. Step 3: Cross multiply
    763,705.60x = 1,145,212.80 × 342,764.80
  4. Step 4: Simplify right side
    763,705.60x = 392,538,636,349.44
  5. Step 5: Solve for x
    x = 392,538,636,349.44/763,705.60
  6. Step 6: Final answer
    x = 513,992.09

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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.