Home / 711,038,372.28-1,065,589,154.79-400,294,190.76

Finding the Fourth Proportional to 711,038,372.28, 1,065,589,154.79 and 400,294,190.76

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Solution

The fourth proportional to 711,038,372.28, 1,065,589,154.79 and 400,294,190.76 is: 599,896,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,038,372.28 : 1,065,589,154.79 = 400,294,190.76 : x
  2. Step 2: Convert to fraction form
    711,038,372.28/1,065,589,154.79 = 400,294,190.76/x
  3. Step 3: Cross multiply
    711,038,372.28x = 1,065,589,154.79 × 400,294,190.76
  4. Step 4: Simplify right side
    711,038,372.28x = 426,549,148,399,295,424
  5. Step 5: Solve for x
    x = 426,549,148,399,295,424/711,038,372.28
  6. Step 6: Final answer
    x = 599,896,102.70

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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.