Home / 687,272.16-948,434.64-381,398.32

Finding the Fourth Proportional to 687,272.16, 948,434.64 and 381,398.32

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Solution

The fourth proportional to 687,272.16, 948,434.64 and 381,398.32 is: 526,329.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,272.16 : 948,434.64 = 381,398.32 : x
  2. Step 2: Convert to fraction form
    687,272.16/948,434.64 = 381,398.32/x
  3. Step 3: Cross multiply
    687,272.16x = 948,434.64 × 381,398.32
  4. Step 4: Simplify right side
    687,272.16x = 361,731,378,325.81
  5. Step 5: Solve for x
    x = 361,731,378,325.81/687,272.16
  6. Step 6: Final answer
    x = 526,329.16

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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.