Home / 991,729.32-1,368,615.33-561,995.16

Finding the Fourth Proportional to 991,729.32, 1,368,615.33 and 561,995.16

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Solution

The fourth proportional to 991,729.32, 1,368,615.33 and 561,995.16 is: 775,569.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,729.32 : 1,368,615.33 = 561,995.16 : x
  2. Step 2: Convert to fraction form
    991,729.32/1,368,615.33 = 561,995.16/x
  3. Step 3: Cross multiply
    991,729.32x = 1,368,615.33 × 561,995.16
  4. Step 4: Simplify right side
    991,729.32x = 769,155,191,361.80
  5. Step 5: Solve for x
    x = 769,155,191,361.80/991,729.32
  6. Step 6: Final answer
    x = 775,569.68

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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.