Home / 878,641.18-1,212,508.72-496,667.96

Finding the Fourth Proportional to 878,641.18, 1,212,508.72 and 496,667.96

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Solution

The fourth proportional to 878,641.18, 1,212,508.72 and 496,667.96 is: 685,392.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,641.18 : 1,212,508.72 = 496,667.96 : x
  2. Step 2: Convert to fraction form
    878,641.18/1,212,508.72 = 496,667.96/x
  3. Step 3: Cross multiply
    878,641.18x = 1,212,508.72 × 496,667.96
  4. Step 4: Simplify right side
    878,641.18x = 602,214,232,444.61
  5. Step 5: Solve for x
    x = 602,214,232,444.61/878,641.18
  6. Step 6: Final answer
    x = 685,392.68

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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.