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Finding the Fourth Proportional to 1,561,364, 2,154,683.76 and 845,972

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Solution

The fourth proportional to 1,561,364, 2,154,683.76 and 845,972 is: 1,167,442.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561,364 : 2,154,683.76 = 845,972 : x
  2. Step 2: Convert to fraction form
    1,561,364/2,154,683.76 = 845,972/x
  3. Step 3: Cross multiply
    1,561,364x = 2,154,683.76 × 845,972
  4. Step 4: Simplify right side
    1,561,364x = 1,822,802,129,814.72
  5. Step 5: Solve for x
    x = 1,822,802,129,814.72/1,561,364
  6. Step 6: Final answer
    x = 1,167,442.14

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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.