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Finding the Fourth Proportional to 611,999.96, 918,155.66 and 359,494.00

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Solution

The fourth proportional to 611,999.96, 918,155.66 and 359,494.00 is: 539,332.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,999.96 : 918,155.66 = 359,494.00 : x
  2. Step 2: Convert to fraction form
    611,999.96/918,155.66 = 359,494.00/x
  3. Step 3: Cross multiply
    611,999.96x = 918,155.66 × 359,494.00
  4. Step 4: Simplify right side
    611,999.96x = 330,071,446,743.18
  5. Step 5: Solve for x
    x = 330,071,446,743.18/611,999.96
  6. Step 6: Final answer
    x = 539,332.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.