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Finding the Fourth Proportional to 898,604,858.80, 1,347,907,288.20 and 438,837,972.40

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Solution

The fourth proportional to 898,604,858.80, 1,347,907,288.20 and 438,837,972.40 is: 658,256,958.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,604,858.80 : 1,347,907,288.20 = 438,837,972.40 : x
  2. Step 2: Convert to fraction form
    898,604,858.80/1,347,907,288.20 = 438,837,972.40/x
  3. Step 3: Cross multiply
    898,604,858.80x = 1,347,907,288.20 × 438,837,972.40
  4. Step 4: Simplify right side
    898,604,858.80x = 591,512,901,336,870,400
  5. Step 5: Solve for x
    x = 591,512,901,336,870,400/898,604,858.80
  6. Step 6: Final answer
    x = 658,256,958.60

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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.