Home / 1,376,341.37-1,899,558.03-990,434.28

Finding the Fourth Proportional to 1,376,341.37, 1,899,558.03 and 990,434.28

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Solution

The fourth proportional to 1,376,341.37, 1,899,558.03 and 990,434.28 is: 1,366,948.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376,341.37 : 1,899,558.03 = 990,434.28 : x
  2. Step 2: Convert to fraction form
    1,376,341.37/1,899,558.03 = 990,434.28/x
  3. Step 3: Cross multiply
    1,376,341.37x = 1,899,558.03 × 990,434.28
  4. Step 4: Simplify right side
    1,376,341.37x = 1,881,387,400,598.74
  5. Step 5: Solve for x
    x = 1,881,387,400,598.74/1,376,341.37
  6. Step 6: Final answer
    x = 1,366,948.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.