Home / 917,413.80-1,376,339.40-443,709.60

Finding the Fourth Proportional to 917,413.80, 1,376,339.40 and 443,709.60

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Solution

The fourth proportional to 917,413.80, 1,376,339.40 and 443,709.60 is: 665,670.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,413.80 : 1,376,339.40 = 443,709.60 : x
  2. Step 2: Convert to fraction form
    917,413.80/1,376,339.40 = 443,709.60/x
  3. Step 3: Cross multiply
    917,413.80x = 1,376,339.40 × 443,709.60
  4. Step 4: Simplify right side
    917,413.80x = 610,695,004,638.24
  5. Step 5: Solve for x
    x = 610,695,004,638.24/917,413.80
  6. Step 6: Final answer
    x = 665,670.17

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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.