Home / 740,394.25-1,021,568.32-450,000.74

Finding the Fourth Proportional to 740,394.25, 1,021,568.32 and 450,000.74

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Solution

The fourth proportional to 740,394.25, 1,021,568.32 and 450,000.74 is: 620,894.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,394.25 : 1,021,568.32 = 450,000.74 : x
  2. Step 2: Convert to fraction form
    740,394.25/1,021,568.32 = 450,000.74/x
  3. Step 3: Cross multiply
    740,394.25x = 1,021,568.32 × 450,000.74
  4. Step 4: Simplify right side
    740,394.25x = 459,706,503,076.98
  5. Step 5: Solve for x
    x = 459,706,503,076.98/740,394.25
  6. Step 6: Final answer
    x = 620,894.21

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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.