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Finding the Fourth Proportional to 539,328.10, 744,420.81 and 313,046.50

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Solution

The fourth proportional to 539,328.10, 744,420.81 and 313,046.50 is: 432,090.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,328.10 : 744,420.81 = 313,046.50 : x
  2. Step 2: Convert to fraction form
    539,328.10/744,420.81 = 313,046.50/x
  3. Step 3: Cross multiply
    539,328.10x = 744,420.81 × 313,046.50
  4. Step 4: Simplify right side
    539,328.10x = 233,038,329,097.67
  5. Step 5: Solve for x
    x = 233,038,329,097.67/539,328.10
  6. Step 6: Final answer
    x = 432,090.09

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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.