Home / 420,918.29-580,845.47-229,894.77

Finding the Fourth Proportional to 420,918.29, 580,845.47 and 229,894.77

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Solution

The fourth proportional to 420,918.29, 580,845.47 and 229,894.77 is: 317,242.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,918.29 : 580,845.47 = 229,894.77 : x
  2. Step 2: Convert to fraction form
    420,918.29/580,845.47 = 229,894.77/x
  3. Step 3: Cross multiply
    420,918.29x = 580,845.47 × 229,894.77
  4. Step 4: Simplify right side
    420,918.29x = 133,533,334,581.72
  5. Step 5: Solve for x
    x = 133,533,334,581.72/420,918.29
  6. Step 6: Final answer
    x = 317,242.89

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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.