Home / 1,398,400.08-1,929,849.72-786,581.40

Finding the Fourth Proportional to 1,398,400.08, 1,929,849.72 and 786,581.40

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Solution

The fourth proportional to 1,398,400.08, 1,929,849.72 and 786,581.40 is: 1,085,514.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,400.08 : 1,929,849.72 = 786,581.40 : x
  2. Step 2: Convert to fraction form
    1,398,400.08/1,929,849.72 = 786,581.40/x
  3. Step 3: Cross multiply
    1,398,400.08x = 1,929,849.72 × 786,581.40
  4. Step 4: Simplify right side
    1,398,400.08x = 1,517,983,894,547.21
  5. Step 5: Solve for x
    x = 1,517,983,894,547.21/1,398,400.08
  6. Step 6: Final answer
    x = 1,085,514.74

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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.