Home / 641,975.23-885,838.93-355,487.95

Finding the Fourth Proportional to 641,975.23, 885,838.93 and 355,487.95

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Solution

The fourth proportional to 641,975.23, 885,838.93 and 355,487.95 is: 490,525.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,975.23 : 885,838.93 = 355,487.95 : x
  2. Step 2: Convert to fraction form
    641,975.23/885,838.93 = 355,487.95/x
  3. Step 3: Cross multiply
    641,975.23x = 885,838.93 × 355,487.95
  4. Step 4: Simplify right side
    641,975.23x = 314,905,065,255.89
  5. Step 5: Solve for x
    x = 314,905,065,255.89/641,975.23
  6. Step 6: Final answer
    x = 490,525.26

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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.