Home / 822,845.89-1,135,070.09-478,643.07

Finding the Fourth Proportional to 822,845.89, 1,135,070.09 and 478,643.07

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Solution

The fourth proportional to 822,845.89, 1,135,070.09 and 478,643.07 is: 660,261.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,845.89 : 1,135,070.09 = 478,643.07 : x
  2. Step 2: Convert to fraction form
    822,845.89/1,135,070.09 = 478,643.07/x
  3. Step 3: Cross multiply
    822,845.89x = 1,135,070.09 × 478,643.07
  4. Step 4: Simplify right side
    822,845.89x = 543,293,432,542.78
  5. Step 5: Solve for x
    x = 543,293,432,542.78/822,845.89
  6. Step 6: Final answer
    x = 660,261.47

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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.