Home / 712,423.32-983,137.18-385,734.74

Finding the Fourth Proportional to 712,423.32, 983,137.18 and 385,734.74

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Solution

The fourth proportional to 712,423.32, 983,137.18 and 385,734.74 is: 532,310.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,423.32 : 983,137.18 = 385,734.74 : x
  2. Step 2: Convert to fraction form
    712,423.32/983,137.18 = 385,734.74/x
  3. Step 3: Cross multiply
    712,423.32x = 983,137.18 × 385,734.74
  4. Step 4: Simplify right side
    712,423.32x = 379,230,164,511.63
  5. Step 5: Solve for x
    x = 379,230,164,511.63/712,423.32
  6. Step 6: Final answer
    x = 532,310.15

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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.