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Finding the Fourth Proportional to 539,870.04, 745,020.64 and 313,530.12

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Solution

The fourth proportional to 539,870.04, 745,020.64 and 313,530.12 is: 432,671.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,870.04 : 745,020.64 = 313,530.12 : x
  2. Step 2: Convert to fraction form
    539,870.04/745,020.64 = 313,530.12/x
  3. Step 3: Cross multiply
    539,870.04x = 745,020.64 × 313,530.12
  4. Step 4: Simplify right side
    539,870.04x = 233,586,410,661.68
  5. Step 5: Solve for x
    x = 233,586,410,661.68/539,870.04
  6. Step 6: Final answer
    x = 432,671.56

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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.