Home / 772,413.72-1,065,993.75-428,283.80

Finding the Fourth Proportional to 772,413.72, 1,065,993.75 and 428,283.80

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Solution

The fourth proportional to 772,413.72, 1,065,993.75 and 428,283.80 is: 591,066.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,413.72 : 1,065,993.75 = 428,283.80 : x
  2. Step 2: Convert to fraction form
    772,413.72/1,065,993.75 = 428,283.80/x
  3. Step 3: Cross multiply
    772,413.72x = 1,065,993.75 × 428,283.80
  4. Step 4: Simplify right side
    772,413.72x = 456,547,848,696.28
  5. Step 5: Solve for x
    x = 456,547,848,696.28/772,413.72
  6. Step 6: Final answer
    x = 591,066.47

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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.