Home / 1,681,617.60-2,320,638.72-917,688

Finding the Fourth Proportional to 1,681,617.60, 2,320,638.72 and 917,688

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Solution

The fourth proportional to 1,681,617.60, 2,320,638.72 and 917,688 is: 1,266,412.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681,617.60 : 2,320,638.72 = 917,688 : x
  2. Step 2: Convert to fraction form
    1,681,617.60/2,320,638.72 = 917,688/x
  3. Step 3: Cross multiply
    1,681,617.60x = 2,320,638.72 × 917,688
  4. Step 4: Simplify right side
    1,681,617.60x = 2,129,622,305,679.36
  5. Step 5: Solve for x
    x = 2,129,622,305,679.36/1,681,617.60
  6. Step 6: Final answer
    x = 1,266,412.95

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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.