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Finding the Fourth Proportional to 628,864.80, 941,914.80 and 615,040.80

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Solution

The fourth proportional to 628,864.80, 941,914.80 and 615,040.80 is: 921,209.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,864.80 : 941,914.80 = 615,040.80 : x
  2. Step 2: Convert to fraction form
    628,864.80/941,914.80 = 615,040.80/x
  3. Step 3: Cross multiply
    628,864.80x = 941,914.80 × 615,040.80
  4. Step 4: Simplify right side
    628,864.80x = 579,316,032,123.84
  5. Step 5: Solve for x
    x = 579,316,032,123.84/628,864.80
  6. Step 6: Final answer
    x = 921,209.19

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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.