Home / 1,387,780.89-1,915,210.74-843,826.60

Finding the Fourth Proportional to 1,387,780.89, 1,915,210.74 and 843,826.60

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Solution

The fourth proportional to 1,387,780.89, 1,915,210.74 and 843,826.60 is: 1,164,525.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,780.89 : 1,915,210.74 = 843,826.60 : x
  2. Step 2: Convert to fraction form
    1,387,780.89/1,915,210.74 = 843,826.60/x
  3. Step 3: Cross multiply
    1,387,780.89x = 1,915,210.74 × 843,826.60
  4. Step 4: Simplify right side
    1,387,780.89x = 1,616,105,767,017.68
  5. Step 5: Solve for x
    x = 1,616,105,767,017.68/1,387,780.89
  6. Step 6: Final answer
    x = 1,164,525.16

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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.