Home / 891,324,601.20-1,336,986,901.80-431,309,271.60

Finding the Fourth Proportional to 891,324,601.20, 1,336,986,901.80 and 431,309,271.60

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Solution

The fourth proportional to 891,324,601.20, 1,336,986,901.80 and 431,309,271.60 is: 646,963,907.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,324,601.20 : 1,336,986,901.80 = 431,309,271.60 : x
  2. Step 2: Convert to fraction form
    891,324,601.20/1,336,986,901.80 = 431,309,271.60/x
  3. Step 3: Cross multiply
    891,324,601.20x = 1,336,986,901.80 × 431,309,271.60
  4. Step 4: Simplify right side
    891,324,601.20x = 576,654,846,754,098,688
  5. Step 5: Solve for x
    x = 576,654,846,754,098,688/891,324,601.20
  6. Step 6: Final answer
    x = 646,963,907.40

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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.