Home / 742,599.61-1,024,790.78-420,371.98

Finding the Fourth Proportional to 742,599.61, 1,024,790.78 and 420,371.98

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Solution

The fourth proportional to 742,599.61, 1,024,790.78 and 420,371.98 is: 580,115.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,599.61 : 1,024,790.78 = 420,371.98 : x
  2. Step 2: Convert to fraction form
    742,599.61/1,024,790.78 = 420,371.98/x
  3. Step 3: Cross multiply
    742,599.61x = 1,024,790.78 × 420,371.98
  4. Step 4: Simplify right side
    742,599.61x = 430,793,333,952.73
  5. Step 5: Solve for x
    x = 430,793,333,952.73/742,599.61
  6. Step 6: Final answer
    x = 580,115.22

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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.