Home / 489,834.67-676,071.30-283,111.83

Finding the Fourth Proportional to 489,834.67, 676,071.30 and 283,111.83

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Solution

The fourth proportional to 489,834.67, 676,071.30 and 283,111.83 is: 390,751.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,834.67 : 676,071.30 = 283,111.83 : x
  2. Step 2: Convert to fraction form
    489,834.67/676,071.30 = 283,111.83/x
  3. Step 3: Cross multiply
    489,834.67x = 676,071.30 × 283,111.83
  4. Step 4: Simplify right side
    489,834.67x = 191,403,782,953.48
  5. Step 5: Solve for x
    x = 191,403,782,953.48/489,834.67
  6. Step 6: Final answer
    x = 390,751.81

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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.