Home / 620,783,974.60-930,840,038.70-257,315,072.20

Finding the Fourth Proportional to 620,783,974.60, 930,840,038.70 and 257,315,072.20

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Solution

The fourth proportional to 620,783,974.60, 930,840,038.70 and 257,315,072.20 is: 385,833,368.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,783,974.60 : 930,840,038.70 = 257,315,072.20 : x
  2. Step 2: Convert to fraction form
    620,783,974.60/930,840,038.70 = 257,315,072.20/x
  3. Step 3: Cross multiply
    620,783,974.60x = 930,840,038.70 × 257,315,072.20
  4. Step 4: Simplify right side
    620,783,974.60x = 239,519,171,764,741,280
  5. Step 5: Solve for x
    x = 239,519,171,764,741,280/620,783,974.60
  6. Step 6: Final answer
    x = 385,833,368.07

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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.