Home / 830,089.20-1,145,476.12-490,589.04

Finding the Fourth Proportional to 830,089.20, 1,145,476.12 and 490,589.04

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Solution

The fourth proportional to 830,089.20, 1,145,476.12 and 490,589.04 is: 676,985.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,089.20 : 1,145,476.12 = 490,589.04 : x
  2. Step 2: Convert to fraction form
    830,089.20/1,145,476.12 = 490,589.04/x
  3. Step 3: Cross multiply
    830,089.20x = 1,145,476.12 × 490,589.04
  4. Step 4: Simplify right side
    830,089.20x = 561,958,030,053.73
  5. Step 5: Solve for x
    x = 561,958,030,053.73/830,089.20
  6. Step 6: Final answer
    x = 676,985.11

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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.