Home / 990,402.88-1,366,840.56-560,758.72

Finding the Fourth Proportional to 990,402.88, 1,366,840.56 and 560,758.72

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Solution

The fourth proportional to 990,402.88, 1,366,840.56 and 560,758.72 is: 773,894.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,402.88 : 1,366,840.56 = 560,758.72 : x
  2. Step 2: Convert to fraction form
    990,402.88/1,366,840.56 = 560,758.72/x
  3. Step 3: Cross multiply
    990,402.88x = 1,366,840.56 × 560,758.72
  4. Step 4: Simplify right side
    990,402.88x = 766,467,762,869.68
  5. Step 5: Solve for x
    x = 766,467,762,869.68/990,402.88
  6. Step 6: Final answer
    x = 773,894.93

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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.