Home / 771,339.68-1,156,890.72-210,417.92

Finding the Fourth Proportional to 771,339.68, 1,156,890.72 and 210,417.92

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Solution

The fourth proportional to 771,339.68, 1,156,890.72 and 210,417.92 is: 315,594.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,339.68 : 1,156,890.72 = 210,417.92 : x
  2. Step 2: Convert to fraction form
    771,339.68/1,156,890.72 = 210,417.92/x
  3. Step 3: Cross multiply
    771,339.68x = 1,156,890.72 × 210,417.92
  4. Step 4: Simplify right side
    771,339.68x = 243,430,538,969.70
  5. Step 5: Solve for x
    x = 243,430,538,969.70/771,339.68
  6. Step 6: Final answer
    x = 315,594.47

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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.