Home / 931,871,408.80-1,398,702,908.40-472,328,471.20

Finding the Fourth Proportional to 931,871,408.80, 1,398,702,908.40 and 472,328,471.20

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Solution

The fourth proportional to 931,871,408.80, 1,398,702,908.40 and 472,328,471.20 is: 708,946,749.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,871,408.80 : 1,398,702,908.40 = 472,328,471.20 : x
  2. Step 2: Convert to fraction form
    931,871,408.80/1,398,702,908.40 = 472,328,471.20/x
  3. Step 3: Cross multiply
    931,871,408.80x = 1,398,702,908.40 × 472,328,471.20
  4. Step 4: Simplify right side
    931,871,408.80x = 660,647,206,387,565,696
  5. Step 5: Solve for x
    x = 660,647,206,387,565,696/931,871,408.80
  6. Step 6: Final answer
    x = 708,946,749.68

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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.