Home / 918,366.40-1,378,205.70-386,269.30

Finding the Fourth Proportional to 918,366.40, 1,378,205.70 and 386,269.30

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Solution

The fourth proportional to 918,366.40, 1,378,205.70 and 386,269.30 is: 579,679.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,366.40 : 1,378,205.70 = 386,269.30 : x
  2. Step 2: Convert to fraction form
    918,366.40/1,378,205.70 = 386,269.30/x
  3. Step 3: Cross multiply
    918,366.40x = 1,378,205.70 × 386,269.30
  4. Step 4: Simplify right side
    918,366.40x = 532,358,550,995.01
  5. Step 5: Solve for x
    x = 532,358,550,995.01/918,366.40
  6. Step 6: Final answer
    x = 579,679.91

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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.