Home / 815,065.80-1,221,008.40-533,730.12

Finding the Fourth Proportional to 815,065.80, 1,221,008.40 and 533,730.12

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Solution

The fourth proportional to 815,065.80, 1,221,008.40 and 533,730.12 is: 799,553.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,065.80 : 1,221,008.40 = 533,730.12 : x
  2. Step 2: Convert to fraction form
    815,065.80/1,221,008.40 = 533,730.12/x
  3. Step 3: Cross multiply
    815,065.80x = 1,221,008.40 × 533,730.12
  4. Step 4: Simplify right side
    815,065.80x = 651,688,959,853.01
  5. Step 5: Solve for x
    x = 651,688,959,853.01/815,065.80
  6. Step 6: Final answer
    x = 799,553.80

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1.5x scale

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.