Home / 931,510.40-1,397,265.60-660,905.60

Finding the Fourth Proportional to 931,510.40, 1,397,265.60 and 660,905.60

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Solution

The fourth proportional to 931,510.40, 1,397,265.60 and 660,905.60 is: 991,358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,510.40 : 1,397,265.60 = 660,905.60 : x
  2. Step 2: Convert to fraction form
    931,510.40/1,397,265.60 = 660,905.60/x
  3. Step 3: Cross multiply
    931,510.40x = 1,397,265.60 × 660,905.60
  4. Step 4: Simplify right side
    931,510.40x = 923,460,659,727.36
  5. Step 5: Solve for x
    x = 923,460,659,727.36/931,510.40
  6. Step 6: Final answer
    x = 991,358.40

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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.