Home / 903,138.72-1,355,330.16-312,162.72

Finding the Fourth Proportional to 903,138.72, 1,355,330.16 and 312,162.72

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Solution

The fourth proportional to 903,138.72, 1,355,330.16 and 312,162.72 is: 468,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,138.72 : 1,355,330.16 = 312,162.72 : x
  2. Step 2: Convert to fraction form
    903,138.72/1,355,330.16 = 312,162.72/x
  3. Step 3: Cross multiply
    903,138.72x = 1,355,330.16 × 312,162.72
  4. Step 4: Simplify right side
    903,138.72x = 423,083,549,243.64
  5. Step 5: Solve for x
    x = 423,083,549,243.64/903,138.72
  6. Step 6: Final answer
    x = 468,459.10

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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.