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Finding the Fourth Proportional to 630,982.80, 946,474.20 and 257,005.80

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Solution

The fourth proportional to 630,982.80, 946,474.20 and 257,005.80 is: 385,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,982.80 : 946,474.20 = 257,005.80 : x
  2. Step 2: Convert to fraction form
    630,982.80/946,474.20 = 257,005.80/x
  3. Step 3: Cross multiply
    630,982.80x = 946,474.20 × 257,005.80
  4. Step 4: Simplify right side
    630,982.80x = 243,249,358,950.36
  5. Step 5: Solve for x
    x = 243,249,358,950.36/630,982.80
  6. Step 6: Final answer
    x = 385,508.70

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1.5x scale

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.