Home / 1,038,658.40-1,557,768.90-439,639.10

Finding the Fourth Proportional to 1,038,658.40, 1,557,768.90 and 439,639.10

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Solution

The fourth proportional to 1,038,658.40, 1,557,768.90 and 439,639.10 is: 659,366.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,658.40 : 1,557,768.90 = 439,639.10 : x
  2. Step 2: Convert to fraction form
    1,038,658.40/1,557,768.90 = 439,639.10/x
  3. Step 3: Cross multiply
    1,038,658.40x = 1,557,768.90 × 439,639.10
  4. Step 4: Simplify right side
    1,038,658.40x = 684,856,117,203.99
  5. Step 5: Solve for x
    x = 684,856,117,203.99/1,038,658.40
  6. Step 6: Final answer
    x = 659,366.08

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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.