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Finding the Fourth Proportional to 638,762.77, 881,482.12 and 352,309.51

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Solution

The fourth proportional to 638,762.77, 881,482.12 and 352,309.51 is: 486,181.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,762.77 : 881,482.12 = 352,309.51 : x
  2. Step 2: Convert to fraction form
    638,762.77/881,482.12 = 352,309.51/x
  3. Step 3: Cross multiply
    638,762.77x = 881,482.12 × 352,309.51
  4. Step 4: Simplify right side
    638,762.77x = 310,554,533,770.96
  5. Step 5: Solve for x
    x = 310,554,533,770.96/638,762.77
  6. Step 6: Final answer
    x = 486,181.33

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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.