Home / 671,987.90-1,007,981.85-620,666.30

Finding the Fourth Proportional to 671,987.90, 1,007,981.85 and 620,666.30

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Solution

The fourth proportional to 671,987.90, 1,007,981.85 and 620,666.30 is: 930,999.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,987.90 : 1,007,981.85 = 620,666.30 : x
  2. Step 2: Convert to fraction form
    671,987.90/1,007,981.85 = 620,666.30/x
  3. Step 3: Cross multiply
    671,987.90x = 1,007,981.85 × 620,666.30
  4. Step 4: Simplify right side
    671,987.90x = 625,620,365,306.66
  5. Step 5: Solve for x
    x = 625,620,365,306.66/671,987.90
  6. Step 6: Final answer
    x = 930,999.45

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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.