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Finding the Fourth Proportional to 858,641.84, 1,184,866.36 and 476,638.46

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Solution

The fourth proportional to 858,641.84, 1,184,866.36 and 476,638.46 is: 657,728.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,641.84 : 1,184,866.36 = 476,638.46 : x
  2. Step 2: Convert to fraction form
    858,641.84/1,184,866.36 = 476,638.46/x
  3. Step 3: Cross multiply
    858,641.84x = 1,184,866.36 × 476,638.46
  4. Step 4: Simplify right side
    858,641.84x = 564,752,870,020.28
  5. Step 5: Solve for x
    x = 564,752,870,020.28/858,641.84
  6. Step 6: Final answer
    x = 657,728.11

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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.