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Finding the Fourth Proportional to 1,404,845.13, 1,938,689.72 and 760,270.01

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Solution

The fourth proportional to 1,404,845.13, 1,938,689.72 and 760,270.01 is: 1,049,174.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,404,845.13 : 1,938,689.72 = 760,270.01 : x
  2. Step 2: Convert to fraction form
    1,404,845.13/1,938,689.72 = 760,270.01/x
  3. Step 3: Cross multiply
    1,404,845.13x = 1,938,689.72 × 760,270.01
  4. Step 4: Simplify right side
    1,404,845.13x = 1,473,927,639,316.50
  5. Step 5: Solve for x
    x = 1,473,927,639,316.50/1,404,845.13
  6. Step 6: Final answer
    x = 1,049,174.47

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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.