Home / 1,428,302.40-2,142,465.72-363,345.36

Finding the Fourth Proportional to 1,428,302.40, 2,142,465.72 and 363,345.36

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Solution

The fourth proportional to 1,428,302.40, 2,142,465.72 and 363,345.36 is: 545,021.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,302.40 : 2,142,465.72 = 363,345.36 : x
  2. Step 2: Convert to fraction form
    1,428,302.40/2,142,465.72 = 363,345.36/x
  3. Step 3: Cross multiply
    1,428,302.40x = 2,142,465.72 × 363,345.36
  4. Step 4: Simplify right side
    1,428,302.40x = 778,454,978,321.06
  5. Step 5: Solve for x
    x = 778,454,978,321.06/1,428,302.40
  6. Step 6: Final answer
    x = 545,021.12

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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.