Home / 489,938.05-734,217.86-389,653.16

Finding the Fourth Proportional to 489,938.05, 734,217.86 and 389,653.16

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Solution

The fourth proportional to 489,938.05, 734,217.86 and 389,653.16 is: 583,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,938.05 : 734,217.86 = 389,653.16 : x
  2. Step 2: Convert to fraction form
    489,938.05/734,217.86 = 389,653.16/x
  3. Step 3: Cross multiply
    489,938.05x = 734,217.86 × 389,653.16
  4. Step 4: Simplify right side
    489,938.05x = 286,090,312,087.12
  5. Step 5: Solve for x
    x = 286,090,312,087.12/489,938.05
  6. Step 6: Final answer
    x = 583,931.61

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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.