Home / 612,490.59-845,237.79-340,555.56

Finding the Fourth Proportional to 612,490.59, 845,237.79 and 340,555.56

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Solution

The fourth proportional to 612,490.59, 845,237.79 and 340,555.56 is: 469,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,490.59 : 845,237.79 = 340,555.56 : x
  2. Step 2: Convert to fraction form
    612,490.59/845,237.79 = 340,555.56/x
  3. Step 3: Cross multiply
    612,490.59x = 845,237.79 × 340,555.56
  4. Step 4: Simplify right side
    612,490.59x = 287,850,428,906.61
  5. Step 5: Solve for x
    x = 287,850,428,906.61/612,490.59
  6. Step 6: Final answer
    x = 469,967.10

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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.