Home / 742,171.50-1,024,198.65-402,639.75

Finding the Fourth Proportional to 742,171.50, 1,024,198.65 and 402,639.75

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Solution

The fourth proportional to 742,171.50, 1,024,198.65 and 402,639.75 is: 555,643.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,171.50 : 1,024,198.65 = 402,639.75 : x
  2. Step 2: Convert to fraction form
    742,171.50/1,024,198.65 = 402,639.75/x
  3. Step 3: Cross multiply
    742,171.50x = 1,024,198.65 × 402,639.75
  4. Step 4: Simplify right side
    742,171.50x = 412,383,088,386.34
  5. Step 5: Solve for x
    x = 412,383,088,386.34/742,171.50
  6. Step 6: Final answer
    x = 555,643.93

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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.