Home / 821,403.52-1,133,503.68-458,821.60

Finding the Fourth Proportional to 821,403.52, 1,133,503.68 and 458,821.60

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Solution

The fourth proportional to 821,403.52, 1,133,503.68 and 458,821.60 is: 633,155.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,403.52 : 1,133,503.68 = 458,821.60 : x
  2. Step 2: Convert to fraction form
    821,403.52/1,133,503.68 = 458,821.60/x
  3. Step 3: Cross multiply
    821,403.52x = 1,133,503.68 × 458,821.60
  4. Step 4: Simplify right side
    821,403.52x = 520,075,972,063.49
  5. Step 5: Solve for x
    x = 520,075,972,063.49/821,403.52
  6. Step 6: Final answer
    x = 633,155.28

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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.