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Finding the Fourth Proportional to 478,669.54, 660,552.58 and 260,885.09

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Solution

The fourth proportional to 478,669.54, 660,552.58 and 260,885.09 is: 360,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,669.54 : 660,552.58 = 260,885.09 : x
  2. Step 2: Convert to fraction form
    478,669.54/660,552.58 = 260,885.09/x
  3. Step 3: Cross multiply
    478,669.54x = 660,552.58 × 260,885.09
  4. Step 4: Simplify right side
    478,669.54x = 172,328,319,283.03
  5. Step 5: Solve for x
    x = 172,328,319,283.03/478,669.54
  6. Step 6: Final answer
    x = 360,015.22

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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.