Home / 745,434.90-1,118,162.07-212,973.30

Finding the Fourth Proportional to 745,434.90, 1,118,162.07 and 212,973.30

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Solution

The fourth proportional to 745,434.90, 1,118,162.07 and 212,973.30 is: 319,462.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,434.90 : 1,118,162.07 = 212,973.30 : x
  2. Step 2: Convert to fraction form
    745,434.90/1,118,162.07 = 212,973.30/x
  3. Step 3: Cross multiply
    745,434.90x = 1,118,162.07 × 212,973.30
  4. Step 4: Simplify right side
    745,434.90x = 238,138,665,982.73
  5. Step 5: Solve for x
    x = 238,138,665,982.73/745,434.90
  6. Step 6: Final answer
    x = 319,462.73

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Double scale
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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.