Home / 690,904.15-1,036,356.23-490,137.55

Finding the Fourth Proportional to 690,904.15, 1,036,356.23 and 490,137.55

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Solution

The fourth proportional to 690,904.15, 1,036,356.23 and 490,137.55 is: 735,206.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,904.15 : 1,036,356.23 = 490,137.55 : x
  2. Step 2: Convert to fraction form
    690,904.15/1,036,356.23 = 490,137.55/x
  3. Step 3: Cross multiply
    690,904.15x = 1,036,356.23 × 490,137.55
  4. Step 4: Simplify right side
    690,904.15x = 507,957,103,499.44
  5. Step 5: Solve for x
    x = 507,957,103,499.44/690,904.15
  6. Step 6: Final answer
    x = 735,206.33

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Double scale
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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.