Home / 1,240,018.40-1,860,286.80-398,655.20

Finding the Fourth Proportional to 1,240,018.40, 1,860,286.80 and 398,655.20

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Solution

The fourth proportional to 1,240,018.40, 1,860,286.80 and 398,655.20 is: 598,066.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,018.40 : 1,860,286.80 = 398,655.20 : x
  2. Step 2: Convert to fraction form
    1,240,018.40/1,860,286.80 = 398,655.20/x
  3. Step 3: Cross multiply
    1,240,018.40x = 1,860,286.80 × 398,655.20
  4. Step 4: Simplify right side
    1,240,018.40x = 741,613,006,311.36
  5. Step 5: Solve for x
    x = 741,613,006,311.36/1,240,018.40
  6. Step 6: Final answer
    x = 598,066.13

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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.