Home / 1,315,590.75-1,973,698.13-429,126.75

Finding the Fourth Proportional to 1,315,590.75, 1,973,698.13 and 429,126.75

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Solution

The fourth proportional to 1,315,590.75, 1,973,698.13 and 429,126.75 is: 643,791.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,590.75 : 1,973,698.13 = 429,126.75 : x
  2. Step 2: Convert to fraction form
    1,315,590.75/1,973,698.13 = 429,126.75/x
  3. Step 3: Cross multiply
    1,315,590.75x = 1,973,698.13 × 429,126.75
  4. Step 4: Simplify right side
    1,315,590.75x = 846,966,661,862.34
  5. Step 5: Solve for x
    x = 846,966,661,862.34/1,315,590.75
  6. Step 6: Final answer
    x = 643,791.89

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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.