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Finding the Fourth Proportional to 488,413.60, 732,620.40 and 328,981.30

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Solution

The fourth proportional to 488,413.60, 732,620.40 and 328,981.30 is: 493,471.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,413.60 : 732,620.40 = 328,981.30 : x
  2. Step 2: Convert to fraction form
    488,413.60/732,620.40 = 328,981.30/x
  3. Step 3: Cross multiply
    488,413.60x = 732,620.40 × 328,981.30
  4. Step 4: Simplify right side
    488,413.60x = 241,018,411,598.52
  5. Step 5: Solve for x
    x = 241,018,411,598.52/488,413.60
  6. Step 6: Final answer
    x = 493,471.95

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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.