Home / 856,543.05-1,182,077.28-489,128.67

Finding the Fourth Proportional to 856,543.05, 1,182,077.28 and 489,128.67

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Solution

The fourth proportional to 856,543.05, 1,182,077.28 and 489,128.67 is: 675,024.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,543.05 : 1,182,077.28 = 489,128.67 : x
  2. Step 2: Convert to fraction form
    856,543.05/1,182,077.28 = 489,128.67/x
  3. Step 3: Cross multiply
    856,543.05x = 1,182,077.28 × 489,128.67
  4. Step 4: Simplify right side
    856,543.05x = 578,187,887,803.62
  5. Step 5: Solve for x
    x = 578,187,887,803.62/856,543.05
  6. Step 6: Final answer
    x = 675,024.90

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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.