Home / 1,386,885.60-2,080,328.40-389,613.60

Finding the Fourth Proportional to 1,386,885.60, 2,080,328.40 and 389,613.60

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Solution

The fourth proportional to 1,386,885.60, 2,080,328.40 and 389,613.60 is: 584,420.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,885.60 : 2,080,328.40 = 389,613.60 : x
  2. Step 2: Convert to fraction form
    1,386,885.60/2,080,328.40 = 389,613.60/x
  3. Step 3: Cross multiply
    1,386,885.60x = 2,080,328.40 × 389,613.60
  4. Step 4: Simplify right side
    1,386,885.60x = 810,524,237,106.24
  5. Step 5: Solve for x
    x = 810,524,237,106.24/1,386,885.60
  6. Step 6: Final answer
    x = 584,420.40

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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.