Home / 1,291,391.64-1,782,136.59-710,681.58

Finding the Fourth Proportional to 1,291,391.64, 1,782,136.59 and 710,681.58

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Solution

The fourth proportional to 1,291,391.64, 1,782,136.59 and 710,681.58 is: 980,749.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,391.64 : 1,782,136.59 = 710,681.58 : x
  2. Step 2: Convert to fraction form
    1,291,391.64/1,782,136.59 = 710,681.58/x
  3. Step 3: Cross multiply
    1,291,391.64x = 1,782,136.59 × 710,681.58
  4. Step 4: Simplify right side
    1,291,391.64x = 1,266,531,644,891.96
  5. Step 5: Solve for x
    x = 1,266,531,644,891.96/1,291,391.64
  6. Step 6: Final answer
    x = 980,749.45

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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.