Home / 815,037.90-1,221,390.45-565,428.30

Finding the Fourth Proportional to 815,037.90, 1,221,390.45 and 565,428.30

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Solution

The fourth proportional to 815,037.90, 1,221,390.45 and 565,428.30 is: 847,333.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,037.90 : 1,221,390.45 = 565,428.30 : x
  2. Step 2: Convert to fraction form
    815,037.90/1,221,390.45 = 565,428.30/x
  3. Step 3: Cross multiply
    815,037.90x = 1,221,390.45 × 565,428.30
  4. Step 4: Simplify right side
    815,037.90x = 690,608,725,779.74
  5. Step 5: Solve for x
    x = 690,608,725,779.74/815,037.90
  6. Step 6: Final answer
    x = 847,333.27

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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.