Home / 909,481.65-1,255,173.39-679,639.83

Finding the Fourth Proportional to 909,481.65, 1,255,173.39 and 679,639.83

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Solution

The fourth proportional to 909,481.65, 1,255,173.39 and 679,639.83 is: 937,969.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,481.65 : 1,255,173.39 = 679,639.83 : x
  2. Step 2: Convert to fraction form
    909,481.65/1,255,173.39 = 679,639.83/x
  3. Step 3: Cross multiply
    909,481.65x = 1,255,173.39 × 679,639.83
  4. Step 4: Simplify right side
    909,481.65x = 853,065,829,400.12
  5. Step 5: Solve for x
    x = 853,065,829,400.12/909,481.65
  6. Step 6: Final answer
    x = 937,969.26

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1.5x scale

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.