Home / 4,128,031.80-6,192,047.70-1,287,774.90

Finding the Fourth Proportional to 4,128,031.80, 6,192,047.70 and 1,287,774.90

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Solution

The fourth proportional to 4,128,031.80, 6,192,047.70 and 1,287,774.90 is: 1,931,662.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128,031.80 : 6,192,047.70 = 1,287,774.90 : x
  2. Step 2: Convert to fraction form
    4,128,031.80/6,192,047.70 = 1,287,774.90/x
  3. Step 3: Cross multiply
    4,128,031.80x = 6,192,047.70 × 1,287,774.90
  4. Step 4: Simplify right side
    4,128,031.80x = 7,973,963,607,662.73
  5. Step 5: Solve for x
    x = 7,973,963,607,662.73/4,128,031.80
  6. Step 6: Final answer
    x = 1,931,662.35

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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.