Home / 1,319,150,405.90-1,980,678,162.45-738,045,260.30

Finding the Fourth Proportional to 1,319,150,405.90, 1,980,678,162.45 and 738,045,260.30

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Solution

The fourth proportional to 1,319,150,405.90, 1,980,678,162.45 and 738,045,260.30 is: 1,108,160,315.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,150,405.90 : 1,980,678,162.45 = 738,045,260.30 : x
  2. Step 2: Convert to fraction form
    1,319,150,405.90/1,980,678,162.45 = 738,045,260.30/x
  3. Step 3: Cross multiply
    1,319,150,405.90x = 1,980,678,162.45 × 738,045,260.30
  4. Step 4: Simplify right side
    1,319,150,405.90x = 1,461,830,129,975,936,000
  5. Step 5: Solve for x
    x = 1,461,830,129,975,936,000/1,319,150,405.90
  6. Step 6: Final answer
    x = 1,108,160,315.49

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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.