Home / 753,436.49-1,040,015.30-498,869.69

Finding the Fourth Proportional to 753,436.49, 1,040,015.30 and 498,869.69

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Solution

The fourth proportional to 753,436.49, 1,040,015.30 and 498,869.69 is: 688,620.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,436.49 : 1,040,015.30 = 498,869.69 : x
  2. Step 2: Convert to fraction form
    753,436.49/1,040,015.30 = 498,869.69/x
  3. Step 3: Cross multiply
    753,436.49x = 1,040,015.30 × 498,869.69
  4. Step 4: Simplify right side
    753,436.49x = 518,832,102,611.83
  5. Step 5: Solve for x
    x = 518,832,102,611.83/753,436.49
  6. Step 6: Final answer
    x = 688,620.89

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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.