Home / 1,319,293.40-1,978,940.10-899,389.40

Finding the Fourth Proportional to 1,319,293.40, 1,978,940.10 and 899,389.40

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Solution

The fourth proportional to 1,319,293.40, 1,978,940.10 and 899,389.40 is: 1,349,084.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,293.40 : 1,978,940.10 = 899,389.40 : x
  2. Step 2: Convert to fraction form
    1,319,293.40/1,978,940.10 = 899,389.40/x
  3. Step 3: Cross multiply
    1,319,293.40x = 1,978,940.10 × 899,389.40
  4. Step 4: Simplify right side
    1,319,293.40x = 1,779,837,749,174.94
  5. Step 5: Solve for x
    x = 1,779,837,749,174.94/1,319,293.40
  6. Step 6: Final answer
    x = 1,349,084.10

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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.