Home / 1,243,649.40-1,865,474.10-402,286.20

Finding the Fourth Proportional to 1,243,649.40, 1,865,474.10 and 402,286.20

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Solution

The fourth proportional to 1,243,649.40, 1,865,474.10 and 402,286.20 is: 603,429.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,649.40 : 1,865,474.10 = 402,286.20 : x
  2. Step 2: Convert to fraction form
    1,243,649.40/1,865,474.10 = 402,286.20/x
  3. Step 3: Cross multiply
    1,243,649.40x = 1,865,474.10 × 402,286.20
  4. Step 4: Simplify right side
    1,243,649.40x = 750,454,486,887.42
  5. Step 5: Solve for x
    x = 750,454,486,887.42/1,243,649.40
  6. Step 6: Final answer
    x = 603,429.30

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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.