Home / 1,316,751.75-1,975,128.57-319,479.75

Finding the Fourth Proportional to 1,316,751.75, 1,975,128.57 and 319,479.75

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Solution

The fourth proportional to 1,316,751.75, 1,975,128.57 and 319,479.75 is: 479,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,751.75 : 1,975,128.57 = 319,479.75 : x
  2. Step 2: Convert to fraction form
    1,316,751.75/1,975,128.57 = 319,479.75/x
  3. Step 3: Cross multiply
    1,316,751.75x = 1,975,128.57 × 319,479.75
  4. Step 4: Simplify right side
    1,316,751.75x = 631,013,581,761.46
  5. Step 5: Solve for x
    x = 631,013,581,761.46/1,316,751.75
  6. Step 6: Final answer
    x = 479,219.85

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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.