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Finding the Fourth Proportional to 640,667.52, 883,029.42 and 586,368.93

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Solution

The fourth proportional to 640,667.52, 883,029.42 and 586,368.93 is: 808,189.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,667.52 : 883,029.42 = 586,368.93 : x
  2. Step 2: Convert to fraction form
    640,667.52/883,029.42 = 586,368.93/x
  3. Step 3: Cross multiply
    640,667.52x = 883,029.42 × 586,368.93
  4. Step 4: Simplify right side
    640,667.52x = 517,781,016,163.92
  5. Step 5: Solve for x
    x = 517,781,016,163.92/640,667.52
  6. Step 6: Final answer
    x = 808,189.90

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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.