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Finding the Fourth Proportional to 513,597.01, 708,990.89 and 306,938.31

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Solution

The fourth proportional to 513,597.01, 708,990.89 and 306,938.31 is: 423,710.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,597.01 : 708,990.89 = 306,938.31 : x
  2. Step 2: Convert to fraction form
    513,597.01/708,990.89 = 306,938.31/x
  3. Step 3: Cross multiply
    513,597.01x = 708,990.89 × 306,938.31
  4. Step 4: Simplify right side
    513,597.01x = 217,616,465,582.00
  5. Step 5: Solve for x
    x = 217,616,465,582.00/513,597.01
  6. Step 6: Final answer
    x = 423,710.54

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1.5x scale

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.