Home / 690,907.90-1,036,361.85-490,141.30

Finding the Fourth Proportional to 690,907.90, 1,036,361.85 and 490,141.30

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Solution

The fourth proportional to 690,907.90, 1,036,361.85 and 490,141.30 is: 735,211.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,907.90 : 1,036,361.85 = 490,141.30 : x
  2. Step 2: Convert to fraction form
    690,907.90/1,036,361.85 = 490,141.30/x
  3. Step 3: Cross multiply
    690,907.90x = 1,036,361.85 × 490,141.30
  4. Step 4: Simplify right side
    690,907.90x = 507,963,744,429.41
  5. Step 5: Solve for x
    x = 507,963,744,429.41/690,907.90
  6. Step 6: Final answer
    x = 735,211.95

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Double scale
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Similar ratio
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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.