Home / 690,696.33-1,036,155.20-291,395.91

Finding the Fourth Proportional to 690,696.33, 1,036,155.20 and 291,395.91

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Solution

The fourth proportional to 690,696.33, 1,036,155.20 and 291,395.91 is: 437,140.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,696.33 : 1,036,155.20 = 291,395.91 : x
  2. Step 2: Convert to fraction form
    690,696.33/1,036,155.20 = 291,395.91/x
  3. Step 3: Cross multiply
    690,696.33x = 1,036,155.20 × 291,395.91
  4. Step 4: Simplify right side
    690,696.33x = 301,931,387,405.23
  5. Step 5: Solve for x
    x = 301,931,387,405.23/690,696.33
  6. Step 6: Final answer
    x = 437,140.57

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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.