Home / 572,456.96-789,716.16-402,784.64

Finding the Fourth Proportional to 572,456.96, 789,716.16 and 402,784.64

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Solution

The fourth proportional to 572,456.96, 789,716.16 and 402,784.64 is: 555,649.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,456.96 : 789,716.16 = 402,784.64 : x
  2. Step 2: Convert to fraction form
    572,456.96/789,716.16 = 402,784.64/x
  3. Step 3: Cross multiply
    572,456.96x = 789,716.16 × 402,784.64
  4. Step 4: Simplify right side
    572,456.96x = 318,085,539,207.78
  5. Step 5: Solve for x
    x = 318,085,539,207.78/572,456.96
  6. Step 6: Final answer
    x = 555,649.70

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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.