Home / 690,688.53-1,036,173.33-291,330.72

Finding the Fourth Proportional to 690,688.53, 1,036,173.33 and 291,330.72

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Solution

The fourth proportional to 690,688.53, 1,036,173.33 and 291,330.72 is: 437,055.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,688.53 : 1,036,173.33 = 291,330.72 : x
  2. Step 2: Convert to fraction form
    690,688.53/1,036,173.33 = 291,330.72/x
  3. Step 3: Cross multiply
    690,688.53x = 1,036,173.33 × 291,330.72
  4. Step 4: Simplify right side
    690,688.53x = 301,869,122,273.70
  5. Step 5: Solve for x
    x = 301,869,122,273.70/690,688.53
  6. Step 6: Final answer
    x = 437,055.36

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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.