Home / 742,920.30-1,114,380.45-477,199.80

Finding the Fourth Proportional to 742,920.30, 1,114,380.45 and 477,199.80

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Solution

The fourth proportional to 742,920.30, 1,114,380.45 and 477,199.80 is: 715,799.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,920.30 : 1,114,380.45 = 477,199.80 : x
  2. Step 2: Convert to fraction form
    742,920.30/1,114,380.45 = 477,199.80/x
  3. Step 3: Cross multiply
    742,920.30x = 1,114,380.45 × 477,199.80
  4. Step 4: Simplify right side
    742,920.30x = 531,782,127,863.91
  5. Step 5: Solve for x
    x = 531,782,127,863.91/742,920.30
  6. Step 6: Final answer
    x = 715,799.70

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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.