Home / 742,433-1,113,813.66-315,946.40

Finding the Fourth Proportional to 742,433, 1,113,813.66 and 315,946.40

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Solution

The fourth proportional to 742,433, 1,113,813.66 and 315,946.40 is: 473,989.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,433 : 1,113,813.66 = 315,946.40 : x
  2. Step 2: Convert to fraction form
    742,433/1,113,813.66 = 315,946.40/x
  3. Step 3: Cross multiply
    742,433x = 1,113,813.66 × 315,946.40
  4. Step 4: Simplify right side
    742,433x = 351,905,416,147.82
  5. Step 5: Solve for x
    x = 351,905,416,147.82/742,433
  6. Step 6: Final answer
    x = 473,989.46

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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.