Home / 771,820.40-1,157,730.60-210,854.90

Finding the Fourth Proportional to 771,820.40, 1,157,730.60 and 210,854.90

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Solution

The fourth proportional to 771,820.40, 1,157,730.60 and 210,854.90 is: 316,282.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,820.40 : 1,157,730.60 = 210,854.90 : x
  2. Step 2: Convert to fraction form
    771,820.40/1,157,730.60 = 210,854.90/x
  3. Step 3: Cross multiply
    771,820.40x = 1,157,730.60 × 210,854.90
  4. Step 4: Simplify right side
    771,820.40x = 244,113,169,889.94
  5. Step 5: Solve for x
    x = 244,113,169,889.94/771,820.40
  6. Step 6: Final answer
    x = 316,282.35

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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.