Home / 714,733.55-986,364.47-428,247.48

Finding the Fourth Proportional to 714,733.55, 986,364.47 and 428,247.48

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Solution

The fourth proportional to 714,733.55, 986,364.47 and 428,247.48 is: 591,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,733.55 : 986,364.47 = 428,247.48 : x
  2. Step 2: Convert to fraction form
    714,733.55/986,364.47 = 428,247.48/x
  3. Step 3: Cross multiply
    714,733.55x = 986,364.47 × 428,247.48
  4. Step 4: Simplify right side
    714,733.55x = 422,408,098,639.04
  5. Step 5: Solve for x
    x = 422,408,098,639.04/714,733.55
  6. Step 6: Final answer
    x = 591,000.80

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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.