Home / 819,879.57-1,131,430.88-457,303.17

Finding the Fourth Proportional to 819,879.57, 1,131,430.88 and 457,303.17

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Solution

The fourth proportional to 819,879.57, 1,131,430.88 and 457,303.17 is: 631,076.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,879.57 : 1,131,430.88 = 457,303.17 : x
  2. Step 2: Convert to fraction form
    819,879.57/1,131,430.88 = 457,303.17/x
  3. Step 3: Cross multiply
    819,879.57x = 1,131,430.88 × 457,303.17
  4. Step 4: Simplify right side
    819,879.57x = 517,406,928,059.89
  5. Step 5: Solve for x
    x = 517,406,928,059.89/819,879.57
  6. Step 6: Final answer
    x = 631,076.74

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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.