Home / 2,811,031.40-4,216,547.10-1,212,480.20

Finding the Fourth Proportional to 2,811,031.40, 4,216,547.10 and 1,212,480.20

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Solution

The fourth proportional to 2,811,031.40, 4,216,547.10 and 1,212,480.20 is: 1,818,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811,031.40 : 4,216,547.10 = 1,212,480.20 : x
  2. Step 2: Convert to fraction form
    2,811,031.40/4,216,547.10 = 1,212,480.20/x
  3. Step 3: Cross multiply
    2,811,031.40x = 4,216,547.10 × 1,212,480.20
  4. Step 4: Simplify right side
    2,811,031.40x = 5,112,479,871,117.42
  5. Step 5: Solve for x
    x = 5,112,479,871,117.42/2,811,031.40
  6. Step 6: Final answer
    x = 1,818,720.30

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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.