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Finding the Fourth Proportional to 617,413.72, 852,163.32 and 402,169.72

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Solution

The fourth proportional to 617,413.72, 852,163.32 and 402,169.72 is: 555,080.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,413.72 : 852,163.32 = 402,169.72 : x
  2. Step 2: Convert to fraction form
    617,413.72/852,163.32 = 402,169.72/x
  3. Step 3: Cross multiply
    617,413.72x = 852,163.32 × 402,169.72
  4. Step 4: Simplify right side
    617,413.72x = 342,714,283,798.67
  5. Step 5: Solve for x
    x = 342,714,283,798.67/617,413.72
  6. Step 6: Final answer
    x = 555,080.45

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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.