Home / 712,618.47-983,401.31-385,928.83

Finding the Fourth Proportional to 712,618.47, 983,401.31 and 385,928.83

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Solution

The fourth proportional to 712,618.47, 983,401.31 and 385,928.83 is: 532,575.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,618.47 : 983,401.31 = 385,928.83 : x
  2. Step 2: Convert to fraction form
    712,618.47/983,401.31 = 385,928.83/x
  3. Step 3: Cross multiply
    712,618.47x = 983,401.31 × 385,928.83
  4. Step 4: Simplify right side
    712,618.47x = 379,522,916,988.77
  5. Step 5: Solve for x
    x = 379,522,916,988.77/712,618.47
  6. Step 6: Final answer
    x = 532,575.19

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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.