Home / 1,148,681.34-1,585,152.87-639,372.78

Finding the Fourth Proportional to 1,148,681.34, 1,585,152.87 and 639,372.78

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Solution

The fourth proportional to 1,148,681.34, 1,585,152.87 and 639,372.78 is: 882,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148,681.34 : 1,585,152.87 = 639,372.78 : x
  2. Step 2: Convert to fraction form
    1,148,681.34/1,585,152.87 = 639,372.78/x
  3. Step 3: Cross multiply
    1,148,681.34x = 1,585,152.87 × 639,372.78
  4. Step 4: Simplify right side
    1,148,681.34x = 1,013,503,597,216.88
  5. Step 5: Solve for x
    x = 1,013,503,597,216.88/1,148,681.34
  6. Step 6: Final answer
    x = 882,319.20

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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.