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Finding the Fourth Proportional to 654,006.70, 917,708.90 and 654,006.70

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Solution

The fourth proportional to 654,006.70, 917,708.90 and 654,006.70 is: 917,708.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,006.70 : 917,708.90 = 654,006.70 : x
  2. Step 2: Convert to fraction form
    654,006.70/917,708.90 = 654,006.70/x
  3. Step 3: Cross multiply
    654,006.70x = 917,708.90 × 654,006.70
  4. Step 4: Simplify right side
    654,006.70x = 600,187,769,249.63
  5. Step 5: Solve for x
    x = 600,187,769,249.63/654,006.70
  6. Step 6: Final answer
    x = 917,708.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.