Home / 821,309.12-1,133,372.72-458,731.28

Finding the Fourth Proportional to 821,309.12, 1,133,372.72 and 458,731.28

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Solution

The fourth proportional to 821,309.12, 1,133,372.72 and 458,731.28 is: 633,030.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,309.12 : 1,133,372.72 = 458,731.28 : x
  2. Step 2: Convert to fraction form
    821,309.12/1,133,372.72 = 458,731.28/x
  3. Step 3: Cross multiply
    821,309.12x = 1,133,372.72 × 458,731.28
  4. Step 4: Simplify right side
    821,309.12x = 519,913,518,562.68
  5. Step 5: Solve for x
    x = 519,913,518,562.68/821,309.12
  6. Step 6: Final answer
    x = 633,030.25

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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.