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Finding the Fourth Proportional to 1,431,980.92, 1,975,641.91 and 887,920.93

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Solution

The fourth proportional to 1,431,980.92, 1,975,641.91 and 887,920.93 is: 1,225,025.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,980.92 : 1,975,641.91 = 887,920.93 : x
  2. Step 2: Convert to fraction form
    1,431,980.92/1,975,641.91 = 887,920.93/x
  3. Step 3: Cross multiply
    1,431,980.92x = 1,975,641.91 × 887,920.93
  4. Step 4: Simplify right side
    1,431,980.92x = 1,754,213,802,074.18
  5. Step 5: Solve for x
    x = 1,754,213,802,074.18/1,431,980.92
  6. Step 6: Final answer
    x = 1,225,025.96

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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.