Home / 447,002.10-670,503.15-278,712.45

Finding the Fourth Proportional to 447,002.10, 670,503.15 and 278,712.45

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Solution

The fourth proportional to 447,002.10, 670,503.15 and 278,712.45 is: 418,068.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,002.10 : 670,503.15 = 278,712.45 : x
  2. Step 2: Convert to fraction form
    447,002.10/670,503.15 = 278,712.45/x
  3. Step 3: Cross multiply
    447,002.10x = 670,503.15 × 278,712.45
  4. Step 4: Simplify right side
    447,002.10x = 186,877,575,669.22
  5. Step 5: Solve for x
    x = 186,877,575,669.22/447,002.10
  6. Step 6: Final answer
    x = 418,068.68

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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.