Home / 647,041,036.80-970,561,555.20-643,009,958.40

Finding the Fourth Proportional to 647,041,036.80, 970,561,555.20 and 643,009,958.40

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Solution

The fourth proportional to 647,041,036.80, 970,561,555.20 and 643,009,958.40 is: 964,514,937.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,041,036.80 : 970,561,555.20 = 643,009,958.40 : x
  2. Step 2: Convert to fraction form
    647,041,036.80/970,561,555.20 = 643,009,958.40/x
  3. Step 3: Cross multiply
    647,041,036.80x = 970,561,555.20 × 643,009,958.40
  4. Step 4: Simplify right side
    647,041,036.80x = 624,080,745,233,791,360
  5. Step 5: Solve for x
    x = 624,080,745,233,791,360/647,041,036.80
  6. Step 6: Final answer
    x = 964,514,937.60

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Similar ratio
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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.