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Finding the Fourth Proportional to 660,259.19, 990,008.95 and 352,131.07

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Solution

The fourth proportional to 660,259.19, 990,008.95 and 352,131.07 is: 527,994.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,259.19 : 990,008.95 = 352,131.07 : x
  2. Step 2: Convert to fraction form
    660,259.19/990,008.95 = 352,131.07/x
  3. Step 3: Cross multiply
    660,259.19x = 990,008.95 × 352,131.07
  4. Step 4: Simplify right side
    660,259.19x = 348,612,910,873.08
  5. Step 5: Solve for x
    x = 348,612,910,873.08/660,259.19
  6. Step 6: Final answer
    x = 527,994.03

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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.