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Finding the Fourth Proportional to 539,663.53, 744,823.19 and 313,440.25

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Solution

The fourth proportional to 539,663.53, 744,823.19 and 313,440.25 is: 432,598.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,663.53 : 744,823.19 = 313,440.25 : x
  2. Step 2: Convert to fraction form
    539,663.53/744,823.19 = 313,440.25/x
  3. Step 3: Cross multiply
    539,663.53x = 744,823.19 × 313,440.25
  4. Step 4: Simplify right side
    539,663.53x = 233,457,566,879.40
  5. Step 5: Solve for x
    x = 233,457,566,879.40/539,663.53
  6. Step 6: Final answer
    x = 432,598.38

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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.