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Finding the Fourth Proportional to 539,473.52, 744,725.40 and 313,075.28

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Solution

The fourth proportional to 539,473.52, 744,725.40 and 313,075.28 is: 432,190.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,473.52 : 744,725.40 = 313,075.28 : x
  2. Step 2: Convert to fraction form
    539,473.52/744,725.40 = 313,075.28/x
  3. Step 3: Cross multiply
    539,473.52x = 744,725.40 × 313,075.28
  4. Step 4: Simplify right side
    539,473.52x = 233,155,113,128.11
  5. Step 5: Solve for x
    x = 233,155,113,128.11/539,473.52
  6. Step 6: Final answer
    x = 432,190.10

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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.