Home / 1,570,401.72-2,167,219.50-891,401.40

Finding the Fourth Proportional to 1,570,401.72, 2,167,219.50 and 891,401.40

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Solution

The fourth proportional to 1,570,401.72, 2,167,219.50 and 891,401.40 is: 1,230,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570,401.72 : 2,167,219.50 = 891,401.40 : x
  2. Step 2: Convert to fraction form
    1,570,401.72/2,167,219.50 = 891,401.40/x
  3. Step 3: Cross multiply
    1,570,401.72x = 2,167,219.50 × 891,401.40
  4. Step 4: Simplify right side
    1,570,401.72x = 1,931,862,496,407.30
  5. Step 5: Solve for x
    x = 1,931,862,496,407.30/1,570,401.72
  6. Step 6: Final answer
    x = 1,230,170.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.