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Finding the Fourth Proportional to 660,019.10, 910,840.84 and 373,539.38

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Solution

The fourth proportional to 660,019.10, 910,840.84 and 373,539.38 is: 515,492.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,019.10 : 910,840.84 = 373,539.38 : x
  2. Step 2: Convert to fraction form
    660,019.10/910,840.84 = 373,539.38/x
  3. Step 3: Cross multiply
    660,019.10x = 910,840.84 × 373,539.38
  4. Step 4: Simplify right side
    660,019.10x = 340,234,922,652.28
  5. Step 5: Solve for x
    x = 340,234,922,652.28/660,019.10
  6. Step 6: Final answer
    x = 515,492.54

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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.