Home / 558,904.86-772,190.55-389,893.50

Finding the Fourth Proportional to 558,904.86, 772,190.55 and 389,893.50

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Solution

The fourth proportional to 558,904.86, 772,190.55 and 389,893.50 is: 538,682.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,904.86 : 772,190.55 = 389,893.50 : x
  2. Step 2: Convert to fraction form
    558,904.86/772,190.55 = 389,893.50/x
  3. Step 3: Cross multiply
    558,904.86x = 772,190.55 × 389,893.50
  4. Step 4: Simplify right side
    558,904.86x = 301,072,076,206.43
  5. Step 5: Solve for x
    x = 301,072,076,206.43/558,904.86
  6. Step 6: Final answer
    x = 538,682.16

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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.