Home / 879,288.30-1,318,932.45-520,037.10

Finding the Fourth Proportional to 879,288.30, 1,318,932.45 and 520,037.10

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Solution

The fourth proportional to 879,288.30, 1,318,932.45 and 520,037.10 is: 780,055.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,288.30 : 1,318,932.45 = 520,037.10 : x
  2. Step 2: Convert to fraction form
    879,288.30/1,318,932.45 = 520,037.10/x
  3. Step 3: Cross multiply
    879,288.30x = 1,318,932.45 × 520,037.10
  4. Step 4: Simplify right side
    879,288.30x = 685,893,806,393.90
  5. Step 5: Solve for x
    x = 685,893,806,393.90/879,288.30
  6. Step 6: Final answer
    x = 780,055.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.