Home / 651,505,408.20-977,258,112.30-393,012,505.80

Finding the Fourth Proportional to 651,505,408.20, 977,258,112.30 and 393,012,505.80

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Solution

The fourth proportional to 651,505,408.20, 977,258,112.30 and 393,012,505.80 is: 589,518,758.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,505,408.20 : 977,258,112.30 = 393,012,505.80 : x
  2. Step 2: Convert to fraction form
    651,505,408.20/977,258,112.30 = 393,012,505.80/x
  3. Step 3: Cross multiply
    651,505,408.20x = 977,258,112.30 × 393,012,505.80
  4. Step 4: Simplify right side
    651,505,408.20x = 384,074,659,528,400,768
  5. Step 5: Solve for x
    x = 384,074,659,528,400,768/651,505,408.20
  6. Step 6: Final answer
    x = 589,518,758.70

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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.