Home / 1,240,388.32-1,857,869.84-879,465.12

Finding the Fourth Proportional to 1,240,388.32, 1,857,869.84 and 879,465.12

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Solution

The fourth proportional to 1,240,388.32, 1,857,869.84 and 879,465.12 is: 1,317,274.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,388.32 : 1,857,869.84 = 879,465.12 : x
  2. Step 2: Convert to fraction form
    1,240,388.32/1,857,869.84 = 879,465.12/x
  3. Step 3: Cross multiply
    1,240,388.32x = 1,857,869.84 × 879,465.12
  4. Step 4: Simplify right side
    1,240,388.32x = 1,633,931,721,779.98
  5. Step 5: Solve for x
    x = 1,633,931,721,779.98/1,240,388.32
  6. Step 6: Final answer
    x = 1,317,274.35

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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.