Home / 648,679.61-973,112.28-199,438.20

Finding the Fourth Proportional to 648,679.61, 973,112.28 and 199,438.20

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Solution

The fourth proportional to 648,679.61, 973,112.28 and 199,438.20 is: 299,185.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,679.61 : 973,112.28 = 199,438.20 : x
  2. Step 2: Convert to fraction form
    648,679.61/973,112.28 = 199,438.20/x
  3. Step 3: Cross multiply
    648,679.61x = 973,112.28 × 199,438.20
  4. Step 4: Simplify right side
    648,679.61x = 194,075,761,521.10
  5. Step 5: Solve for x
    x = 194,075,761,521.10/648,679.61
  6. Step 6: Final answer
    x = 299,185.85

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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.