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Finding the Fourth Proportional to 612,966.56, 845,610 and 358,328.48

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Solution

The fourth proportional to 612,966.56, 845,610 and 358,328.48 is: 494,327.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,966.56 : 845,610 = 358,328.48 : x
  2. Step 2: Convert to fraction form
    612,966.56/845,610 = 358,328.48/x
  3. Step 3: Cross multiply
    612,966.56x = 845,610 × 358,328.48
  4. Step 4: Simplify right side
    612,966.56x = 303,006,145,972.80
  5. Step 5: Solve for x
    x = 303,006,145,972.80/612,966.56
  6. Step 6: Final answer
    x = 494,327.37

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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.