Home / 724,017.21-999,143.76-401,729.61

Finding the Fourth Proportional to 724,017.21, 999,143.76 and 401,729.61

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Solution

The fourth proportional to 724,017.21, 999,143.76 and 401,729.61 is: 554,386.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,017.21 : 999,143.76 = 401,729.61 : x
  2. Step 2: Convert to fraction form
    724,017.21/999,143.76 = 401,729.61/x
  3. Step 3: Cross multiply
    724,017.21x = 999,143.76 × 401,729.61
  4. Step 4: Simplify right side
    724,017.21x = 401,385,633,038.73
  5. Step 5: Solve for x
    x = 401,385,633,038.73/724,017.21
  6. Step 6: Final answer
    x = 554,386.87

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1.5x scale

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.