Home / 879,981.40-1,319,097.30-405,839.80

Finding the Fourth Proportional to 879,981.40, 1,319,097.30 and 405,839.80

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Solution

The fourth proportional to 879,981.40, 1,319,097.30 and 405,839.80 is: 608,356.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,981.40 : 1,319,097.30 = 405,839.80 : x
  2. Step 2: Convert to fraction form
    879,981.40/1,319,097.30 = 405,839.80/x
  3. Step 3: Cross multiply
    879,981.40x = 1,319,097.30 × 405,839.80
  4. Step 4: Simplify right side
    879,981.40x = 535,342,184,412.54
  5. Step 5: Solve for x
    x = 535,342,184,412.54/879,981.40
  6. Step 6: Final answer
    x = 608,356.25

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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.