Home / 426,829.80-638,862.30-302,413.80

Finding the Fourth Proportional to 426,829.80, 638,862.30 and 302,413.80

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Solution

The fourth proportional to 426,829.80, 638,862.30 and 302,413.80 is: 452,641.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,829.80 : 638,862.30 = 302,413.80 : x
  2. Step 2: Convert to fraction form
    426,829.80/638,862.30 = 302,413.80/x
  3. Step 3: Cross multiply
    426,829.80x = 638,862.30 × 302,413.80
  4. Step 4: Simplify right side
    426,829.80x = 193,200,775,819.74
  5. Step 5: Solve for x
    x = 193,200,775,819.74/426,829.80
  6. Step 6: Final answer
    x = 452,641.25

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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.