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Finding the Fourth Proportional to 660,044, 990,482.48 and 280,964.16

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Solution

The fourth proportional to 660,044, 990,482.48 and 280,964.16 is: 421,623.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,044 : 990,482.48 = 280,964.16 : x
  2. Step 2: Convert to fraction form
    660,044/990,482.48 = 280,964.16/x
  3. Step 3: Cross multiply
    660,044x = 990,482.48 × 280,964.16
  4. Step 4: Simplify right side
    660,044x = 278,290,077,987.92
  5. Step 5: Solve for x
    x = 278,290,077,987.92/660,044
  6. Step 6: Final answer
    x = 421,623.53

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1.5x scale

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.