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Finding the Fourth Proportional to 671,653.70, 1,007,480.55 and 620,332.10

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Solution

The fourth proportional to 671,653.70, 1,007,480.55 and 620,332.10 is: 930,498.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,653.70 : 1,007,480.55 = 620,332.10 : x
  2. Step 2: Convert to fraction form
    671,653.70/1,007,480.55 = 620,332.10/x
  3. Step 3: Cross multiply
    671,653.70x = 1,007,480.55 × 620,332.10
  4. Step 4: Simplify right side
    671,653.70x = 624,972,525,290.66
  5. Step 5: Solve for x
    x = 624,972,525,290.66/671,653.70
  6. Step 6: Final answer
    x = 930,498.15

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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.