Home / 879,320.80-1,318,981.20-436,031.20

Finding the Fourth Proportional to 879,320.80, 1,318,981.20 and 436,031.20

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Solution

The fourth proportional to 879,320.80, 1,318,981.20 and 436,031.20 is: 654,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,320.80 : 1,318,981.20 = 436,031.20 : x
  2. Step 2: Convert to fraction form
    879,320.80/1,318,981.20 = 436,031.20/x
  3. Step 3: Cross multiply
    879,320.80x = 1,318,981.20 × 436,031.20
  4. Step 4: Simplify right side
    879,320.80x = 575,116,955,413.44
  5. Step 5: Solve for x
    x = 575,116,955,413.44/879,320.80
  6. Step 6: Final answer
    x = 654,046.80

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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.