Home / 1,230,445.36-1,698,012.30-686,548.36

Finding the Fourth Proportional to 1,230,445.36, 1,698,012.30 and 686,548.36

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Solution

The fourth proportional to 1,230,445.36, 1,698,012.30 and 686,548.36 is: 947,435.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,445.36 : 1,698,012.30 = 686,548.36 : x
  2. Step 2: Convert to fraction form
    1,230,445.36/1,698,012.30 = 686,548.36/x
  3. Step 3: Cross multiply
    1,230,445.36x = 1,698,012.30 × 686,548.36
  4. Step 4: Simplify right side
    1,230,445.36x = 1,165,767,559,824.83
  5. Step 5: Solve for x
    x = 1,165,767,559,824.83/1,230,445.36
  6. Step 6: Final answer
    x = 947,435.46

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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.