Home / 1,276,103.40-1,914,047.10-389,639.40

Finding the Fourth Proportional to 1,276,103.40, 1,914,047.10 and 389,639.40

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Solution

The fourth proportional to 1,276,103.40, 1,914,047.10 and 389,639.40 is: 584,426.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,103.40 : 1,914,047.10 = 389,639.40 : x
  2. Step 2: Convert to fraction form
    1,276,103.40/1,914,047.10 = 389,639.40/x
  3. Step 3: Cross multiply
    1,276,103.40x = 1,914,047.10 × 389,639.40
  4. Step 4: Simplify right side
    1,276,103.40x = 745,788,163,615.74
  5. Step 5: Solve for x
    x = 745,788,163,615.74/1,276,103.40
  6. Step 6: Final answer
    x = 584,426.12

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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.