Home / 651,505,111.20-977,257,666.80-393,012,208.80

Finding the Fourth Proportional to 651,505,111.20, 977,257,666.80 and 393,012,208.80

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Solution

The fourth proportional to 651,505,111.20, 977,257,666.80 and 393,012,208.80 is: 589,518,313.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,505,111.20 : 977,257,666.80 = 393,012,208.80 : x
  2. Step 2: Convert to fraction form
    651,505,111.20/977,257,666.80 = 393,012,208.80/x
  3. Step 3: Cross multiply
    651,505,111.20x = 977,257,666.80 × 393,012,208.80
  4. Step 4: Simplify right side
    651,505,111.20x = 384,074,194,195,802,432
  5. Step 5: Solve for x
    x = 384,074,194,195,802,432/651,505,111.20
  6. Step 6: Final answer
    x = 589,518,313.20

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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.