Home / 516,355,307.28-712,595,589.21-290,365,419.87

Finding the Fourth Proportional to 516,355,307.28, 712,595,589.21 and 290,365,419.87

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Solution

The fourth proportional to 516,355,307.28, 712,595,589.21 and 290,365,419.87 is: 400,718,486.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,355,307.28 : 712,595,589.21 = 290,365,419.87 : x
  2. Step 2: Convert to fraction form
    516,355,307.28/712,595,589.21 = 290,365,419.87/x
  3. Step 3: Cross multiply
    516,355,307.28x = 712,595,589.21 × 290,365,419.87
  4. Step 4: Simplify right side
    516,355,307.28x = 206,913,117,458,471,712
  5. Step 5: Solve for x
    x = 206,913,117,458,471,712/516,355,307.28
  6. Step 6: Final answer
    x = 400,718,486.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.