Home / 690,904.40-1,036,356.60-490,137.80

Finding the Fourth Proportional to 690,904.40, 1,036,356.60 and 490,137.80

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Solution

The fourth proportional to 690,904.40, 1,036,356.60 and 490,137.80 is: 735,206.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,904.40 : 1,036,356.60 = 490,137.80 : x
  2. Step 2: Convert to fraction form
    690,904.40/1,036,356.60 = 490,137.80/x
  3. Step 3: Cross multiply
    690,904.40x = 1,036,356.60 × 490,137.80
  4. Step 4: Simplify right side
    690,904.40x = 507,957,543,939.48
  5. Step 5: Solve for x
    x = 507,957,543,939.48/690,904.40
  6. Step 6: Final answer
    x = 735,206.70

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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.