Home / 724,602.50-999,982.68-402,312.64

Finding the Fourth Proportional to 724,602.50, 999,982.68 and 402,312.64

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Solution

The fourth proportional to 724,602.50, 999,982.68 and 402,312.64 is: 555,208.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,602.50 : 999,982.68 = 402,312.64 : x
  2. Step 2: Convert to fraction form
    724,602.50/999,982.68 = 402,312.64/x
  3. Step 3: Cross multiply
    724,602.50x = 999,982.68 × 402,312.64
  4. Step 4: Simplify right side
    724,602.50x = 402,305,671,945.08
  5. Step 5: Solve for x
    x = 402,305,671,945.08/724,602.50
  6. Step 6: Final answer
    x = 555,208.78

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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.