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Finding the Fourth Proportional to 679,964.20, 1,019,946.30 and 637,973.80

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Solution

The fourth proportional to 679,964.20, 1,019,946.30 and 637,973.80 is: 956,960.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,964.20 : 1,019,946.30 = 637,973.80 : x
  2. Step 2: Convert to fraction form
    679,964.20/1,019,946.30 = 637,973.80/x
  3. Step 3: Cross multiply
    679,964.20x = 1,019,946.30 × 637,973.80
  4. Step 4: Simplify right side
    679,964.20x = 650,699,016,806.94
  5. Step 5: Solve for x
    x = 650,699,016,806.94/679,964.20
  6. Step 6: Final answer
    x = 956,960.70

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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.