Home / 529,807.21-731,137.75-288,088.05

Finding the Fourth Proportional to 529,807.21, 731,137.75 and 288,088.05

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Solution

The fourth proportional to 529,807.21, 731,137.75 and 288,088.05 is: 397,563.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,807.21 : 731,137.75 = 288,088.05 : x
  2. Step 2: Convert to fraction form
    529,807.21/731,137.75 = 288,088.05/x
  3. Step 3: Cross multiply
    529,807.21x = 731,137.75 × 288,088.05
  4. Step 4: Simplify right side
    529,807.21x = 210,632,046,587.78
  5. Step 5: Solve for x
    x = 210,632,046,587.78/529,807.21
  6. Step 6: Final answer
    x = 397,563.57

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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.