Home / 985,666.28-1,478,681.93-311,917.19

Finding the Fourth Proportional to 985,666.28, 1,478,681.93 and 311,917.19

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Solution

The fourth proportional to 985,666.28, 1,478,681.93 and 311,917.19 is: 467,933.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,666.28 : 1,478,681.93 = 311,917.19 : x
  2. Step 2: Convert to fraction form
    985,666.28/1,478,681.93 = 311,917.19/x
  3. Step 3: Cross multiply
    985,666.28x = 1,478,681.93 × 311,917.19
  4. Step 4: Simplify right side
    985,666.28x = 461,226,305,895.76
  5. Step 5: Solve for x
    x = 461,226,305,895.76/985,666.28
  6. Step 6: Final answer
    x = 467,933.54

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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.