Home / 1,272,465.79-1,908,648.83-431,017.51

Finding the Fourth Proportional to 1,272,465.79, 1,908,648.83 and 431,017.51

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Solution

The fourth proportional to 1,272,465.79, 1,908,648.83 and 431,017.51 is: 646,509.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,465.79 : 1,908,648.83 = 431,017.51 : x
  2. Step 2: Convert to fraction form
    1,272,465.79/1,908,648.83 = 431,017.51/x
  3. Step 3: Cross multiply
    1,272,465.79x = 1,908,648.83 × 431,017.51
  4. Step 4: Simplify right side
    1,272,465.79x = 822,661,064,015.93
  5. Step 5: Solve for x
    x = 822,661,064,015.93/1,272,465.79
  6. Step 6: Final answer
    x = 646,509.38

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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.