Home / 931,286.16-1,284,157.80-628,955.28

Finding the Fourth Proportional to 931,286.16, 1,284,157.80 and 628,955.28

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Solution

The fourth proportional to 931,286.16, 1,284,157.80 and 628,955.28 is: 867,271.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,286.16 : 1,284,157.80 = 628,955.28 : x
  2. Step 2: Convert to fraction form
    931,286.16/1,284,157.80 = 628,955.28/x
  3. Step 3: Cross multiply
    931,286.16x = 1,284,157.80 × 628,955.28
  4. Step 4: Simplify right side
    931,286.16x = 807,677,828,663.18
  5. Step 5: Solve for x
    x = 807,677,828,663.18/931,286.16
  6. Step 6: Final answer
    x = 867,271.38

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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.