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Finding the Fourth Proportional to 570,614.90, 788,268.80 and 455,742.72

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Solution

The fourth proportional to 570,614.90, 788,268.80 and 455,742.72 is: 629,580.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,614.90 : 788,268.80 = 455,742.72 : x
  2. Step 2: Convert to fraction form
    570,614.90/788,268.80 = 455,742.72/x
  3. Step 3: Cross multiply
    570,614.90x = 788,268.80 × 455,742.72
  4. Step 4: Simplify right side
    570,614.90x = 359,247,767,003.14
  5. Step 5: Solve for x
    x = 359,247,767,003.14/570,614.90
  6. Step 6: Final answer
    x = 629,580.07

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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.