Home / 775,128.90-1,069,690.32-426,283.10

Finding the Fourth Proportional to 775,128.90, 1,069,690.32 and 426,283.10

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Solution

The fourth proportional to 775,128.90, 1,069,690.32 and 426,283.10 is: 588,277.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,128.90 : 1,069,690.32 = 426,283.10 : x
  2. Step 2: Convert to fraction form
    775,128.90/1,069,690.32 = 426,283.10/x
  3. Step 3: Cross multiply
    775,128.90x = 1,069,690.32 × 426,283.10
  4. Step 4: Simplify right side
    775,128.90x = 455,990,900,301.14
  5. Step 5: Solve for x
    x = 455,990,900,301.14/775,128.90
  6. Step 6: Final answer
    x = 588,277.51

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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.