Home / 1,261,306-1,740,639.18-688,382.92

Finding the Fourth Proportional to 1,261,306, 1,740,639.18 and 688,382.92

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Solution

The fourth proportional to 1,261,306, 1,740,639.18 and 688,382.92 is: 949,988.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,306 : 1,740,639.18 = 688,382.92 : x
  2. Step 2: Convert to fraction form
    1,261,306/1,740,639.18 = 688,382.92/x
  3. Step 3: Cross multiply
    1,261,306x = 1,740,639.18 × 688,382.92
  4. Step 4: Simplify right side
    1,261,306x = 1,198,226,281,394.81
  5. Step 5: Solve for x
    x = 1,198,226,281,394.81/1,261,306
  6. Step 6: Final answer
    x = 949,988.57

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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.