Home / 898,503.78-1,239,928.92-490,605.39

Finding the Fourth Proportional to 898,503.78, 1,239,928.92 and 490,605.39

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Solution

The fourth proportional to 898,503.78, 1,239,928.92 and 490,605.39 is: 677,032.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,503.78 : 1,239,928.92 = 490,605.39 : x
  2. Step 2: Convert to fraction form
    898,503.78/1,239,928.92 = 490,605.39/x
  3. Step 3: Cross multiply
    898,503.78x = 1,239,928.92 × 490,605.39
  4. Step 4: Simplify right side
    898,503.78x = 608,315,811,368.88
  5. Step 5: Solve for x
    x = 608,315,811,368.88/898,503.78
  6. Step 6: Final answer
    x = 677,032.00

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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.