Home / 805,927.55-1,112,156.87-438,393.11

Finding the Fourth Proportional to 805,927.55, 1,112,156.87 and 438,393.11

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Solution

The fourth proportional to 805,927.55, 1,112,156.87 and 438,393.11 is: 604,969.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,927.55 : 1,112,156.87 = 438,393.11 : x
  2. Step 2: Convert to fraction form
    805,927.55/1,112,156.87 = 438,393.11/x
  3. Step 3: Cross multiply
    805,927.55x = 1,112,156.87 × 438,393.11
  4. Step 4: Simplify right side
    805,927.55x = 487,561,901,294.42
  5. Step 5: Solve for x
    x = 487,561,901,294.42/805,927.55
  6. Step 6: Final answer
    x = 604,969.89

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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.