Home / 745,292.36-1,118,111.82-212,820.68

Finding the Fourth Proportional to 745,292.36, 1,118,111.82 and 212,820.68

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Solution

The fourth proportional to 745,292.36, 1,118,111.82 and 212,820.68 is: 319,280.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,292.36 : 1,118,111.82 = 212,820.68 : x
  2. Step 2: Convert to fraction form
    745,292.36/1,118,111.82 = 212,820.68/x
  3. Step 3: Cross multiply
    745,292.36x = 1,118,111.82 × 212,820.68
  4. Step 4: Simplify right side
    745,292.36x = 237,957,317,848.44
  5. Step 5: Solve for x
    x = 237,957,317,848.44/745,292.36
  6. Step 6: Final answer
    x = 319,280.50

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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.