Home / 1,325,287.40-1,987,931.10-438,823.40

Finding the Fourth Proportional to 1,325,287.40, 1,987,931.10 and 438,823.40

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Solution

The fourth proportional to 1,325,287.40, 1,987,931.10 and 438,823.40 is: 658,235.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,287.40 : 1,987,931.10 = 438,823.40 : x
  2. Step 2: Convert to fraction form
    1,325,287.40/1,987,931.10 = 438,823.40/x
  3. Step 3: Cross multiply
    1,325,287.40x = 1,987,931.10 × 438,823.40
  4. Step 4: Simplify right side
    1,325,287.40x = 872,350,684,267.74
  5. Step 5: Solve for x
    x = 872,350,684,267.74/1,325,287.40
  6. Step 6: Final answer
    x = 658,235.10

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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.