Home / 809,413.80-1,214,460.90-434,999.40

Finding the Fourth Proportional to 809,413.80, 1,214,460.90 and 434,999.40

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Solution

The fourth proportional to 809,413.80, 1,214,460.90 and 434,999.40 is: 652,681.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,413.80 : 1,214,460.90 = 434,999.40 : x
  2. Step 2: Convert to fraction form
    809,413.80/1,214,460.90 = 434,999.40/x
  3. Step 3: Cross multiply
    809,413.80x = 1,214,460.90 × 434,999.40
  4. Step 4: Simplify right side
    809,413.80x = 528,289,762,823.46
  5. Step 5: Solve for x
    x = 528,289,762,823.46/809,413.80
  6. Step 6: Final answer
    x = 652,681.93

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1.5x scale

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.