Home / 1,272,466.79-1,908,650.32-431,018.51

Finding the Fourth Proportional to 1,272,466.79, 1,908,650.32 and 431,018.51

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Solution

The fourth proportional to 1,272,466.79, 1,908,650.32 and 431,018.51 is: 646,510.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,466.79 : 1,908,650.32 = 431,018.51 : x
  2. Step 2: Convert to fraction form
    1,272,466.79/1,908,650.32 = 431,018.51/x
  3. Step 3: Cross multiply
    1,272,466.79x = 1,908,650.32 × 431,018.51
  4. Step 4: Simplify right side
    1,272,466.79x = 822,663,617,037.42
  5. Step 5: Solve for x
    x = 822,663,617,037.42/1,272,466.79
  6. Step 6: Final answer
    x = 646,510.87

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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.