Home / 1,638,365.42-2,458,031.88-840,206

Finding the Fourth Proportional to 1,638,365.42, 2,458,031.88 and 840,206

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Solution

The fourth proportional to 1,638,365.42, 2,458,031.88 and 840,206 is: 1,260,557.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,365.42 : 2,458,031.88 = 840,206 : x
  2. Step 2: Convert to fraction form
    1,638,365.42/2,458,031.88 = 840,206/x
  3. Step 3: Cross multiply
    1,638,365.42x = 2,458,031.88 × 840,206
  4. Step 4: Simplify right side
    1,638,365.42x = 2,065,253,133,767.28
  5. Step 5: Solve for x
    x = 2,065,253,133,767.28/1,638,365.42
  6. Step 6: Final answer
    x = 1,260,557.08

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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.