Home / 1,296,421.81-1,788,897.04-723,486.13

Finding the Fourth Proportional to 1,296,421.81, 1,788,897.04 and 723,486.13

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Solution

The fourth proportional to 1,296,421.81, 1,788,897.04 and 723,486.13 is: 998,318.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,421.81 : 1,788,897.04 = 723,486.13 : x
  2. Step 2: Convert to fraction form
    1,296,421.81/1,788,897.04 = 723,486.13/x
  3. Step 3: Cross multiply
    1,296,421.81x = 1,788,897.04 × 723,486.13
  4. Step 4: Simplify right side
    1,296,421.81x = 1,294,242,190,157.10
  5. Step 5: Solve for x
    x = 1,294,242,190,157.10/1,296,421.81
  6. Step 6: Final answer
    x = 998,318.74

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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.