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Finding the Fourth Proportional to 601,891.08, 830,874.26 and 421,312.20

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Solution

The fourth proportional to 601,891.08, 830,874.26 and 421,312.20 is: 581,596.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    601,891.08 : 830,874.26 = 421,312.20 : x
  2. Step 2: Convert to fraction form
    601,891.08/830,874.26 = 421,312.20/x
  3. Step 3: Cross multiply
    601,891.08x = 830,874.26 × 421,312.20
  4. Step 4: Simplify right side
    601,891.08x = 350,057,462,403.97
  5. Step 5: Solve for x
    x = 350,057,462,403.97/601,891.08
  6. Step 6: Final answer
    x = 581,596.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.