Home / 765,729.36-1,056,706.56-426,190.32

Finding the Fourth Proportional to 765,729.36, 1,056,706.56 and 426,190.32

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Solution

The fourth proportional to 765,729.36, 1,056,706.56 and 426,190.32 is: 588,142.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,729.36 : 1,056,706.56 = 426,190.32 : x
  2. Step 2: Convert to fraction form
    765,729.36/1,056,706.56 = 426,190.32/x
  3. Step 3: Cross multiply
    765,729.36x = 1,056,706.56 × 426,190.32
  4. Step 4: Simplify right side
    765,729.36x = 450,358,106,952.50
  5. Step 5: Solve for x
    x = 450,358,106,952.50/765,729.36
  6. Step 6: Final answer
    x = 588,142.67

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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.