Home / 1,319,150,405.40-1,980,678,161.70-738,045,259.80

Finding the Fourth Proportional to 1,319,150,405.40, 1,980,678,161.70 and 738,045,259.80

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Solution

The fourth proportional to 1,319,150,405.40, 1,980,678,161.70 and 738,045,259.80 is: 1,108,160,314.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,150,405.40 : 1,980,678,161.70 = 738,045,259.80 : x
  2. Step 2: Convert to fraction form
    1,319,150,405.40/1,980,678,161.70 = 738,045,259.80/x
  3. Step 3: Cross multiply
    1,319,150,405.40x = 1,980,678,161.70 × 738,045,259.80
  4. Step 4: Simplify right side
    1,319,150,405.40x = 1,461,830,128,432,062,976
  5. Step 5: Solve for x
    x = 1,461,830,128,432,062,976/1,319,150,405.40
  6. Step 6: Final answer
    x = 1,108,160,314.74

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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.