Home / 1,292,670,013.20-1,939,005,019.80-898,128,214.80

Finding the Fourth Proportional to 1,292,670,013.20, 1,939,005,019.80 and 898,128,214.80

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Solution

The fourth proportional to 1,292,670,013.20, 1,939,005,019.80 and 898,128,214.80 is: 1,347,192,322.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,670,013.20 : 1,939,005,019.80 = 898,128,214.80 : x
  2. Step 2: Convert to fraction form
    1,292,670,013.20/1,939,005,019.80 = 898,128,214.80/x
  3. Step 3: Cross multiply
    1,292,670,013.20x = 1,939,005,019.80 × 898,128,214.80
  4. Step 4: Simplify right side
    1,292,670,013.20x = 1,741,475,116,921,212,416
  5. Step 5: Solve for x
    x = 1,741,475,116,921,212,416/1,292,670,013.20
  6. Step 6: Final answer
    x = 1,347,192,322.20

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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.