Home / 1,186,128.20-1,779,422.70-512,208.20

Finding the Fourth Proportional to 1,186,128.20, 1,779,422.70 and 512,208.20

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Solution

The fourth proportional to 1,186,128.20, 1,779,422.70 and 512,208.20 is: 768,411.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,128.20 : 1,779,422.70 = 512,208.20 : x
  2. Step 2: Convert to fraction form
    1,186,128.20/1,779,422.70 = 512,208.20/x
  3. Step 3: Cross multiply
    1,186,128.20x = 1,779,422.70 × 512,208.20
  4. Step 4: Simplify right side
    1,186,128.20x = 911,434,898,206.14
  5. Step 5: Solve for x
    x = 911,434,898,206.14/1,186,128.20
  6. Step 6: Final answer
    x = 768,411.79

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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.