Home / 621,076,839.12-931,265,683.74-206,331,622.20

Finding the Fourth Proportional to 621,076,839.12, 931,265,683.74 and 206,331,622.20

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Solution

The fourth proportional to 621,076,839.12, 931,265,683.74 and 206,331,622.20 is: 309,381,298.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,076,839.12 : 931,265,683.74 = 206,331,622.20 : x
  2. Step 2: Convert to fraction form
    621,076,839.12/931,265,683.74 = 206,331,622.20/x
  3. Step 3: Cross multiply
    621,076,839.12x = 931,265,683.74 × 206,331,622.20
  4. Step 4: Simplify right side
    621,076,839.12x = 192,149,559,225,266,368
  5. Step 5: Solve for x
    x = 192,149,559,225,266,368/621,076,839.12
  6. Step 6: Final answer
    x = 309,381,298.93

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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.