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Finding the Fourth Proportional to 560,854.49, 772,866.83 and 399,424.73

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Solution

The fourth proportional to 560,854.49, 772,866.83 and 399,424.73 is: 550,413.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,854.49 : 772,866.83 = 399,424.73 : x
  2. Step 2: Convert to fraction form
    560,854.49/772,866.83 = 399,424.73/x
  3. Step 3: Cross multiply
    560,854.49x = 772,866.83 × 399,424.73
  4. Step 4: Simplify right side
    560,854.49x = 308,702,122,032.93
  5. Step 5: Solve for x
    x = 308,702,122,032.93/560,854.49
  6. Step 6: Final answer
    x = 550,413.93

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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.