Home / 1,386,000.60-2,079,000.90-439,369.80

Finding the Fourth Proportional to 1,386,000.60, 2,079,000.90 and 439,369.80

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Solution

The fourth proportional to 1,386,000.60, 2,079,000.90 and 439,369.80 is: 659,054.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,000.60 : 2,079,000.90 = 439,369.80 : x
  2. Step 2: Convert to fraction form
    1,386,000.60/2,079,000.90 = 439,369.80/x
  3. Step 3: Cross multiply
    1,386,000.60x = 2,079,000.90 × 439,369.80
  4. Step 4: Simplify right side
    1,386,000.60x = 913,450,209,632.82
  5. Step 5: Solve for x
    x = 913,450,209,632.82/1,386,000.60
  6. Step 6: Final answer
    x = 659,054.70

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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.