Home / 1,114,678.65-1,538,351.40-631,329.78

Finding the Fourth Proportional to 1,114,678.65, 1,538,351.40 and 631,329.78

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Solution

The fourth proportional to 1,114,678.65, 1,538,351.40 and 631,329.78 is: 871,288.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,114,678.65 : 1,538,351.40 = 631,329.78 : x
  2. Step 2: Convert to fraction form
    1,114,678.65/1,538,351.40 = 631,329.78/x
  3. Step 3: Cross multiply
    1,114,678.65x = 1,538,351.40 × 631,329.78
  4. Step 4: Simplify right side
    1,114,678.65x = 971,207,050,924.69
  5. Step 5: Solve for x
    x = 971,207,050,924.69/1,114,678.65
  6. Step 6: Final answer
    x = 871,288.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.