Home / 679,108.81-1,018,761-205,831.03

Finding the Fourth Proportional to 679,108.81, 1,018,761 and 205,831.03

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Solution

The fourth proportional to 679,108.81, 1,018,761 and 205,831.03 is: 308,776.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,108.81 : 1,018,761 = 205,831.03 : x
  2. Step 2: Convert to fraction form
    679,108.81/1,018,761 = 205,831.03/x
  3. Step 3: Cross multiply
    679,108.81x = 1,018,761 × 205,831.03
  4. Step 4: Simplify right side
    679,108.81x = 209,692,625,953.83
  5. Step 5: Solve for x
    x = 209,692,625,953.83/679,108.81
  6. Step 6: Final answer
    x = 308,776.18

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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.