Home / 712,733.98-983,584.04-390,422.80

Finding the Fourth Proportional to 712,733.98, 983,584.04 and 390,422.80

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Solution

The fourth proportional to 712,733.98, 983,584.04 and 390,422.80 is: 538,789.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,733.98 : 983,584.04 = 390,422.80 : x
  2. Step 2: Convert to fraction form
    712,733.98/983,584.04 = 390,422.80/x
  3. Step 3: Cross multiply
    712,733.98x = 983,584.04 × 390,422.80
  4. Step 4: Simplify right side
    712,733.98x = 384,013,633,449.21
  5. Step 5: Solve for x
    x = 384,013,633,449.21/712,733.98
  6. Step 6: Final answer
    x = 538,789.57

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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.