Home / 1,386,000.10-2,079,000.15-439,369.30

Finding the Fourth Proportional to 1,386,000.10, 2,079,000.15 and 439,369.30

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Solution

The fourth proportional to 1,386,000.10, 2,079,000.15 and 439,369.30 is: 659,053.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,000.10 : 2,079,000.15 = 439,369.30 : x
  2. Step 2: Convert to fraction form
    1,386,000.10/2,079,000.15 = 439,369.30/x
  3. Step 3: Cross multiply
    1,386,000.10x = 2,079,000.15 × 439,369.30
  4. Step 4: Simplify right side
    1,386,000.10x = 913,448,840,605.40
  5. Step 5: Solve for x
    x = 913,448,840,605.40/1,386,000.10
  6. Step 6: Final answer
    x = 659,053.95

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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.