Home / 850,028.40-1,173,024.65-487,431.09

Finding the Fourth Proportional to 850,028.40, 1,173,024.65 and 487,431.09

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Solution

The fourth proportional to 850,028.40, 1,173,024.65 and 487,431.09 is: 672,646.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,028.40 : 1,173,024.65 = 487,431.09 : x
  2. Step 2: Convert to fraction form
    850,028.40/1,173,024.65 = 487,431.09/x
  3. Step 3: Cross multiply
    850,028.40x = 1,173,024.65 × 487,431.09
  4. Step 4: Simplify right side
    850,028.40x = 571,768,684,964.95
  5. Step 5: Solve for x
    x = 571,768,684,964.95/850,028.40
  6. Step 6: Final answer
    x = 672,646.57

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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.