Home / 745,397.40-1,118,105.82-212,935.80

Finding the Fourth Proportional to 745,397.40, 1,118,105.82 and 212,935.80

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Solution

The fourth proportional to 745,397.40, 1,118,105.82 and 212,935.80 is: 319,406.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,397.40 : 1,118,105.82 = 212,935.80 : x
  2. Step 2: Convert to fraction form
    745,397.40/1,118,105.82 = 212,935.80/x
  3. Step 3: Cross multiply
    745,397.40x = 1,118,105.82 × 212,935.80
  4. Step 4: Simplify right side
    745,397.40x = 238,084,757,266.36
  5. Step 5: Solve for x
    x = 238,084,757,266.36/745,397.40
  6. Step 6: Final answer
    x = 319,406.48

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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.