Home / 612,435.49-918,839.97-313,126.25

Finding the Fourth Proportional to 612,435.49, 918,839.97 and 313,126.25

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Solution

The fourth proportional to 612,435.49, 918,839.97 and 313,126.25 is: 469,784.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,435.49 : 918,839.97 = 313,126.25 : x
  2. Step 2: Convert to fraction form
    612,435.49/918,839.97 = 313,126.25/x
  3. Step 3: Cross multiply
    612,435.49x = 918,839.97 × 313,126.25
  4. Step 4: Simplify right side
    612,435.49x = 287,712,909,562.01
  5. Step 5: Solve for x
    x = 287,712,909,562.01/612,435.49
  6. Step 6: Final answer
    x = 469,784.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.