Home / 1,038,485.40-1,557,728.10-439,247.40

Finding the Fourth Proportional to 1,038,485.40, 1,557,728.10 and 439,247.40

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Solution

The fourth proportional to 1,038,485.40, 1,557,728.10 and 439,247.40 is: 658,871.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,485.40 : 1,557,728.10 = 439,247.40 : x
  2. Step 2: Convert to fraction form
    1,038,485.40/1,557,728.10 = 439,247.40/x
  3. Step 3: Cross multiply
    1,038,485.40x = 1,557,728.10 × 439,247.40
  4. Step 4: Simplify right side
    1,038,485.40x = 684,228,017,831.94
  5. Step 5: Solve for x
    x = 684,228,017,831.94/1,038,485.40
  6. Step 6: Final answer
    x = 658,871.10

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Double scale
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Similar ratio
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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.