Home / 855,117.80-1,281,830.70-405,047.60

Finding the Fourth Proportional to 855,117.80, 1,281,830.70 and 405,047.60

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Solution

The fourth proportional to 855,117.80, 1,281,830.70 and 405,047.60 is: 607,170.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,117.80 : 1,281,830.70 = 405,047.60 : x
  2. Step 2: Convert to fraction form
    855,117.80/1,281,830.70 = 405,047.60/x
  3. Step 3: Cross multiply
    855,117.80x = 1,281,830.70 × 405,047.60
  4. Step 4: Simplify right side
    855,117.80x = 519,202,448,641.32
  5. Step 5: Solve for x
    x = 519,202,448,641.32/855,117.80
  6. Step 6: Final answer
    x = 607,170.67

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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.