Home / 485,833.23-670,102.83-421,186.95

Finding the Fourth Proportional to 485,833.23, 670,102.83 and 421,186.95

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Solution

The fourth proportional to 485,833.23, 670,102.83 and 421,186.95 is: 580,937.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,833.23 : 670,102.83 = 421,186.95 : x
  2. Step 2: Convert to fraction form
    485,833.23/670,102.83 = 421,186.95/x
  3. Step 3: Cross multiply
    485,833.23x = 670,102.83 × 421,186.95
  4. Step 4: Simplify right side
    485,833.23x = 282,238,567,154.07
  5. Step 5: Solve for x
    x = 282,238,567,154.07/485,833.23
  6. Step 6: Final answer
    x = 580,937.14

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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.