Home / 931,870.40-1,397,805.60-613,005.80

Finding the Fourth Proportional to 931,870.40, 1,397,805.60 and 613,005.80

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Solution

The fourth proportional to 931,870.40, 1,397,805.60 and 613,005.80 is: 919,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,870.40 : 1,397,805.60 = 613,005.80 : x
  2. Step 2: Convert to fraction form
    931,870.40/1,397,805.60 = 613,005.80/x
  3. Step 3: Cross multiply
    931,870.40x = 1,397,805.60 × 613,005.80
  4. Step 4: Simplify right side
    931,870.40x = 856,862,940,072.48
  5. Step 5: Solve for x
    x = 856,862,940,072.48/931,870.40
  6. Step 6: Final answer
    x = 919,508.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.