Home / 1,681,688-2,320,778.40-917,790.40

Finding the Fourth Proportional to 1,681,688, 2,320,778.40 and 917,790.40

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Solution

The fourth proportional to 1,681,688, 2,320,778.40 and 917,790.40 is: 1,266,577.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681,688 : 2,320,778.40 = 917,790.40 : x
  2. Step 2: Convert to fraction form
    1,681,688/2,320,778.40 = 917,790.40/x
  3. Step 3: Cross multiply
    1,681,688x = 2,320,778.40 × 917,790.40
  4. Step 4: Simplify right side
    1,681,688x = 2,129,988,136,047.36
  5. Step 5: Solve for x
    x = 2,129,988,136,047.36/1,681,688
  6. Step 6: Final answer
    x = 1,266,577.47

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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.