Home / 690,913.90-1,036,370.85-490,147.30

Finding the Fourth Proportional to 690,913.90, 1,036,370.85 and 490,147.30

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Solution

The fourth proportional to 690,913.90, 1,036,370.85 and 490,147.30 is: 735,220.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,913.90 : 1,036,370.85 = 490,147.30 : x
  2. Step 2: Convert to fraction form
    690,913.90/1,036,370.85 = 490,147.30/x
  3. Step 3: Cross multiply
    690,913.90x = 1,036,370.85 × 490,147.30
  4. Step 4: Simplify right side
    690,913.90x = 507,974,373,926.21
  5. Step 5: Solve for x
    x = 507,974,373,926.21/690,913.90
  6. Step 6: Final answer
    x = 735,220.95

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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.