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Finding the Fourth Proportional to 572,239.44, 789,653.64 and 317,590.80

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Solution

The fourth proportional to 572,239.44, 789,653.64 and 317,590.80 is: 438,254.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,239.44 : 789,653.64 = 317,590.80 : x
  2. Step 2: Convert to fraction form
    572,239.44/789,653.64 = 317,590.80/x
  3. Step 3: Cross multiply
    572,239.44x = 789,653.64 × 317,590.80
  4. Step 4: Simplify right side
    572,239.44x = 250,786,731,250.51
  5. Step 5: Solve for x
    x = 250,786,731,250.51/572,239.44
  6. Step 6: Final answer
    x = 438,254.89

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1.5x scale

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.