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Finding the Fourth Proportional to 708,935.82, 977,993.76 and 479,573.40

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Solution

The fourth proportional to 708,935.82, 977,993.76 and 479,573.40 is: 661,582.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,935.82 : 977,993.76 = 479,573.40 : x
  2. Step 2: Convert to fraction form
    708,935.82/977,993.76 = 479,573.40/x
  3. Step 3: Cross multiply
    708,935.82x = 977,993.76 × 479,573.40
  4. Step 4: Simplify right side
    708,935.82x = 469,019,792,661.98
  5. Step 5: Solve for x
    x = 469,019,792,661.98/708,935.82
  6. Step 6: Final answer
    x = 661,582.87

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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.