Home / 1,389,975-1,918,152.54-786,363

Finding the Fourth Proportional to 1,389,975, 1,918,152.54 and 786,363

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Solution

The fourth proportional to 1,389,975, 1,918,152.54 and 786,363 is: 1,085,173.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,975 : 1,918,152.54 = 786,363 : x
  2. Step 2: Convert to fraction form
    1,389,975/1,918,152.54 = 786,363/x
  3. Step 3: Cross multiply
    1,389,975x = 1,918,152.54 × 786,363
  4. Step 4: Simplify right side
    1,389,975x = 1,508,364,185,812.02
  5. Step 5: Solve for x
    x = 1,508,364,185,812.02/1,389,975
  6. Step 6: Final answer
    x = 1,085,173.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.