Home / 1,221,615.79-1,685,909.49-705,391.45

Finding the Fourth Proportional to 1,221,615.79, 1,685,909.49 and 705,391.45

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Solution

The fourth proportional to 1,221,615.79, 1,685,909.49 and 705,391.45 is: 973,486.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,615.79 : 1,685,909.49 = 705,391.45 : x
  2. Step 2: Convert to fraction form
    1,221,615.79/1,685,909.49 = 705,391.45/x
  3. Step 3: Cross multiply
    1,221,615.79x = 1,685,909.49 × 705,391.45
  4. Step 4: Simplify right side
    1,221,615.79x = 1,189,226,139,719.86
  5. Step 5: Solve for x
    x = 1,189,226,139,719.86/1,221,615.79
  6. Step 6: Final answer
    x = 973,486.22

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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.