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Finding the Fourth Proportional to 673,215.43, 929,119.44 and 386,734.81

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Solution

The fourth proportional to 673,215.43, 929,119.44 and 386,734.81 is: 533,741.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,215.43 : 929,119.44 = 386,734.81 : x
  2. Step 2: Convert to fraction form
    673,215.43/929,119.44 = 386,734.81/x
  3. Step 3: Cross multiply
    673,215.43x = 929,119.44 × 386,734.81
  4. Step 4: Simplify right side
    673,215.43x = 359,322,830,095.71
  5. Step 5: Solve for x
    x = 359,322,830,095.71/673,215.43
  6. Step 6: Final answer
    x = 533,741.23

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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.