Home / 10,658,605.20-15,987,907.80-4,989,901.20

Finding the Fourth Proportional to 10,658,605.20, 15,987,907.80 and 4,989,901.20

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Solution

The fourth proportional to 10,658,605.20, 15,987,907.80 and 4,989,901.20 is: 7,484,851.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,658,605.20 : 15,987,907.80 = 4,989,901.20 : x
  2. Step 2: Convert to fraction form
    10,658,605.20/15,987,907.80 = 4,989,901.20/x
  3. Step 3: Cross multiply
    10,658,605.20x = 15,987,907.80 × 4,989,901.20
  4. Step 4: Simplify right side
    10,658,605.20x = 79,778,080,316,709.36
  5. Step 5: Solve for x
    x = 79,778,080,316,709.36/10,658,605.20
  6. Step 6: Final answer
    x = 7,484,851.80

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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.