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Finding the Fourth Proportional to 571,639.40, 856,875.90 and 334,860.20

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Solution

The fourth proportional to 571,639.40, 856,875.90 and 334,860.20 is: 501,948.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,639.40 : 856,875.90 = 334,860.20 : x
  2. Step 2: Convert to fraction form
    571,639.40/856,875.90 = 334,860.20/x
  3. Step 3: Cross multiply
    571,639.40x = 856,875.90 × 334,860.20
  4. Step 4: Simplify right side
    571,639.40x = 286,933,635,249.18
  5. Step 5: Solve for x
    x = 286,933,635,249.18/571,639.40
  6. Step 6: Final answer
    x = 501,948.67

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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.