Home / 753,403.48-1,039,969.74-498,836.68

Finding the Fourth Proportional to 753,403.48, 1,039,969.74 and 498,836.68

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Solution

The fourth proportional to 753,403.48, 1,039,969.74 and 498,836.68 is: 688,575.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,403.48 : 1,039,969.74 = 498,836.68 : x
  2. Step 2: Convert to fraction form
    753,403.48/1,039,969.74 = 498,836.68/x
  3. Step 3: Cross multiply
    753,403.48x = 1,039,969.74 × 498,836.68
  4. Step 4: Simplify right side
    753,403.48x = 518,775,052,402.06
  5. Step 5: Solve for x
    x = 518,775,052,402.06/753,403.48
  6. Step 6: Final answer
    x = 688,575.33

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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.