Home / 742,313.20-1,024,392-402,781.36

Finding the Fourth Proportional to 742,313.20, 1,024,392 and 402,781.36

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Solution

The fourth proportional to 742,313.20, 1,024,392 and 402,781.36 is: 555,838.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,313.20 : 1,024,392 = 402,781.36 : x
  2. Step 2: Convert to fraction form
    742,313.20/1,024,392 = 402,781.36/x
  3. Step 3: Cross multiply
    742,313.20x = 1,024,392 × 402,781.36
  4. Step 4: Simplify right side
    742,313.20x = 412,606,002,933.12
  5. Step 5: Solve for x
    x = 412,606,002,933.12/742,313.20
  6. Step 6: Final answer
    x = 555,838.16

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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.