Home / 651,505,111.70-977,257,667.55-393,012,209.30

Finding the Fourth Proportional to 651,505,111.70, 977,257,667.55 and 393,012,209.30

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Solution

The fourth proportional to 651,505,111.70, 977,257,667.55 and 393,012,209.30 is: 589,518,313.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,505,111.70 : 977,257,667.55 = 393,012,209.30 : x
  2. Step 2: Convert to fraction form
    651,505,111.70/977,257,667.55 = 393,012,209.30/x
  3. Step 3: Cross multiply
    651,505,111.70x = 977,257,667.55 × 393,012,209.30
  4. Step 4: Simplify right side
    651,505,111.70x = 384,074,194,979,190,400
  5. Step 5: Solve for x
    x = 384,074,194,979,190,400/651,505,111.70
  6. Step 6: Final answer
    x = 589,518,313.95

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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.