Home / 747,359.81-1,031,378.33-407,849.93

Finding the Fourth Proportional to 747,359.81, 1,031,378.33 and 407,849.93

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Solution

The fourth proportional to 747,359.81, 1,031,378.33 and 407,849.93 is: 562,844.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,359.81 : 1,031,378.33 = 407,849.93 : x
  2. Step 2: Convert to fraction form
    747,359.81/1,031,378.33 = 407,849.93/x
  3. Step 3: Cross multiply
    747,359.81x = 1,031,378.33 × 407,849.93
  4. Step 4: Simplify right side
    747,359.81x = 420,647,577,654.77
  5. Step 5: Solve for x
    x = 420,647,577,654.77/747,359.81
  6. Step 6: Final answer
    x = 562,844.79

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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.