Home / 687,303.93-948,484.59-381,381.51

Finding the Fourth Proportional to 687,303.93, 948,484.59 and 381,381.51

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Solution

The fourth proportional to 687,303.93, 948,484.59 and 381,381.51 is: 526,309.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,303.93 : 948,484.59 = 381,381.51 : x
  2. Step 2: Convert to fraction form
    687,303.93/948,484.59 = 381,381.51/x
  3. Step 3: Cross multiply
    687,303.93x = 948,484.59 × 381,381.51
  4. Step 4: Simplify right side
    687,303.93x = 361,734,485,145.93
  5. Step 5: Solve for x
    x = 361,734,485,145.93/687,303.93
  6. Step 6: Final answer
    x = 526,309.35

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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.