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Finding the Fourth Proportional to 878,329.88, 1,211,426.34 and 756,030.32

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Solution

The fourth proportional to 878,329.88, 1,211,426.34 and 756,030.32 is: 1,042,746.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,329.88 : 1,211,426.34 = 756,030.32 : x
  2. Step 2: Convert to fraction form
    878,329.88/1,211,426.34 = 756,030.32/x
  3. Step 3: Cross multiply
    878,329.88x = 1,211,426.34 × 756,030.32
  4. Step 4: Simplify right side
    878,329.88x = 915,875,043,486.63
  5. Step 5: Solve for x
    x = 915,875,043,486.63/878,329.88
  6. Step 6: Final answer
    x = 1,042,746.08

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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.