Home / 821,129.89-1,133,161.94-458,567.21

Finding the Fourth Proportional to 821,129.89, 1,133,161.94 and 458,567.21

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Solution

The fourth proportional to 821,129.89, 1,133,161.94 and 458,567.21 is: 632,824.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,129.89 : 1,133,161.94 = 458,567.21 : x
  2. Step 2: Convert to fraction form
    821,129.89/1,133,161.94 = 458,567.21/x
  3. Step 3: Cross multiply
    821,129.89x = 1,133,161.94 × 458,567.21
  4. Step 4: Simplify right side
    821,129.89x = 519,630,909,303.99
  5. Step 5: Solve for x
    x = 519,630,909,303.99/821,129.89
  6. Step 6: Final answer
    x = 632,824.25

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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.