Home / 651,505,019.20-977,257,528.80-393,012,116.80

Finding the Fourth Proportional to 651,505,019.20, 977,257,528.80 and 393,012,116.80

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Solution

The fourth proportional to 651,505,019.20, 977,257,528.80 and 393,012,116.80 is: 589,518,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,505,019.20 : 977,257,528.80 = 393,012,116.80 : x
  2. Step 2: Convert to fraction form
    651,505,019.20/977,257,528.80 = 393,012,116.80/x
  3. Step 3: Cross multiply
    651,505,019.20x = 977,257,528.80 × 393,012,116.80
  4. Step 4: Simplify right side
    651,505,019.20x = 384,074,050,052,424,960
  5. Step 5: Solve for x
    x = 384,074,050,052,424,960/651,505,019.20
  6. Step 6: Final answer
    x = 589,518,175.20

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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.