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Finding the Fourth Proportional to 709,268.88, 977,647.63 and 479,742.42

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Solution

The fourth proportional to 709,268.88, 977,647.63 and 479,742.42 is: 661,271.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,268.88 : 977,647.63 = 479,742.42 : x
  2. Step 2: Convert to fraction form
    709,268.88/977,647.63 = 479,742.42/x
  3. Step 3: Cross multiply
    709,268.88x = 977,647.63 × 479,742.42
  4. Step 4: Simplify right side
    709,268.88x = 469,019,041,889.45
  5. Step 5: Solve for x
    x = 469,019,041,889.45/709,268.88
  6. Step 6: Final answer
    x = 661,271.14

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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.