Home / 651,505,343.20-977,258,014.80-393,012,440.80

Finding the Fourth Proportional to 651,505,343.20, 977,258,014.80 and 393,012,440.80

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Solution

The fourth proportional to 651,505,343.20, 977,258,014.80 and 393,012,440.80 is: 589,518,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,505,343.20 : 977,258,014.80 = 393,012,440.80 : x
  2. Step 2: Convert to fraction form
    651,505,343.20/977,258,014.80 = 393,012,440.80/x
  3. Step 3: Cross multiply
    651,505,343.20x = 977,258,014.80 × 393,012,440.80
  4. Step 4: Simplify right side
    651,505,343.20x = 384,074,557,687,910,528
  5. Step 5: Solve for x
    x = 384,074,557,687,910,528/651,505,343.20
  6. Step 6: Final answer
    x = 589,518,661.20

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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.