Home / 1,292,670,017.20-1,939,005,025.80-898,128,218.80

Finding the Fourth Proportional to 1,292,670,017.20, 1,939,005,025.80 and 898,128,218.80

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Solution

The fourth proportional to 1,292,670,017.20, 1,939,005,025.80 and 898,128,218.80 is: 1,347,192,328.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,670,017.20 : 1,939,005,025.80 = 898,128,218.80 : x
  2. Step 2: Convert to fraction form
    1,292,670,017.20/1,939,005,025.80 = 898,128,218.80/x
  3. Step 3: Cross multiply
    1,292,670,017.20x = 1,939,005,025.80 × 898,128,218.80
  4. Step 4: Simplify right side
    1,292,670,017.20x = 1,741,475,130,066,001,920
  5. Step 5: Solve for x
    x = 1,741,475,130,066,001,920/1,292,670,017.20
  6. Step 6: Final answer
    x = 1,347,192,328.20

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Double scale
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1.5x scale

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.