Home / 911,389.32-1,257,525-529,218.36

Finding the Fourth Proportional to 911,389.32, 1,257,525 and 529,218.36

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Solution

The fourth proportional to 911,389.32, 1,257,525 and 529,218.36 is: 730,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,389.32 : 1,257,525 = 529,218.36 : x
  2. Step 2: Convert to fraction form
    911,389.32/1,257,525 = 529,218.36/x
  3. Step 3: Cross multiply
    911,389.32x = 1,257,525 × 529,218.36
  4. Step 4: Simplify right side
    911,389.32x = 665,505,318,159
  5. Step 5: Solve for x
    x = 665,505,318,159/911,389.32
  6. Step 6: Final answer
    x = 730,209.70

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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.