Home / 485,823.30-670,089.07-421,176.95

Finding the Fourth Proportional to 485,823.30, 670,089.07 and 421,176.95

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Solution

The fourth proportional to 485,823.30, 670,089.07 and 421,176.95 is: 580,923.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,823.30 : 670,089.07 = 421,176.95 : x
  2. Step 2: Convert to fraction form
    485,823.30/670,089.07 = 421,176.95/x
  3. Step 3: Cross multiply
    485,823.30x = 670,089.07 × 421,176.95
  4. Step 4: Simplify right side
    485,823.30x = 282,226,070,730.94
  5. Step 5: Solve for x
    x = 282,226,070,730.94/485,823.30
  6. Step 6: Final answer
    x = 580,923.29

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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.