Home / 724,481,643.40-1,086,722,465.10-645,875,614.60

Finding the Fourth Proportional to 724,481,643.40, 1,086,722,465.10 and 645,875,614.60

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Solution

The fourth proportional to 724,481,643.40, 1,086,722,465.10 and 645,875,614.60 is: 968,813,421.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,481,643.40 : 1,086,722,465.10 = 645,875,614.60 : x
  2. Step 2: Convert to fraction form
    724,481,643.40/1,086,722,465.10 = 645,875,614.60/x
  3. Step 3: Cross multiply
    724,481,643.40x = 1,086,722,465.10 × 645,875,614.60
  4. Step 4: Simplify right side
    724,481,643.40x = 701,887,540,046,089,472
  5. Step 5: Solve for x
    x = 701,887,540,046,089,472/724,481,643.40
  6. Step 6: Final answer
    x = 968,813,421.90

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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.