Home / 691,009,188.50-953,599,025.22-393,647,023.46

Finding the Fourth Proportional to 691,009,188.50, 953,599,025.22 and 393,647,023.46

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Solution

The fourth proportional to 691,009,188.50, 953,599,025.22 and 393,647,023.46 is: 543,236,506.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,009,188.50 : 953,599,025.22 = 393,647,023.46 : x
  2. Step 2: Convert to fraction form
    691,009,188.50/953,599,025.22 = 393,647,023.46/x
  3. Step 3: Cross multiply
    691,009,188.50x = 953,599,025.22 × 393,647,023.46
  4. Step 4: Simplify right side
    691,009,188.50x = 375,381,417,852,210,432
  5. Step 5: Solve for x
    x = 375,381,417,852,210,432/691,009,188.50
  6. Step 6: Final answer
    x = 543,236,506.98

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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.