Home / 742,313.53-1,024,392.67-402,781.78

Finding the Fourth Proportional to 742,313.53, 1,024,392.67 and 402,781.78

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Solution

The fourth proportional to 742,313.53, 1,024,392.67 and 402,781.78 is: 555,838.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,313.53 : 1,024,392.67 = 402,781.78 : x
  2. Step 2: Convert to fraction form
    742,313.53/1,024,392.67 = 402,781.78/x
  3. Step 3: Cross multiply
    742,313.53x = 1,024,392.67 × 402,781.78
  4. Step 4: Simplify right side
    742,313.53x = 412,606,705,580.74
  5. Step 5: Solve for x
    x = 412,606,705,580.74/742,313.53
  6. Step 6: Final answer
    x = 555,838.86

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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.