Home / 1,398,091.80-1,929,348.24-786,244.40

Finding the Fourth Proportional to 1,398,091.80, 1,929,348.24 and 786,244.40

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Solution

The fourth proportional to 1,398,091.80, 1,929,348.24 and 786,244.40 is: 1,085,006.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,091.80 : 1,929,348.24 = 786,244.40 : x
  2. Step 2: Convert to fraction form
    1,398,091.80/1,929,348.24 = 786,244.40/x
  3. Step 3: Cross multiply
    1,398,091.80x = 1,929,348.24 × 786,244.40
  4. Step 4: Simplify right side
    1,398,091.80x = 1,516,939,249,349.86
  5. Step 5: Solve for x
    x = 1,516,939,249,349.86/1,398,091.80
  6. Step 6: Final answer
    x = 1,085,006.90

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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.