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Finding the Fourth Proportional to 612,760.10, 845,588.64 and 340,820.30

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Solution

The fourth proportional to 612,760.10, 845,588.64 and 340,820.30 is: 470,320.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,760.10 : 845,588.64 = 340,820.30 : x
  2. Step 2: Convert to fraction form
    612,760.10/845,588.64 = 340,820.30/x
  3. Step 3: Cross multiply
    612,760.10x = 845,588.64 × 340,820.30
  4. Step 4: Simplify right side
    612,760.10x = 288,193,773,961.39
  5. Step 5: Solve for x
    x = 288,193,773,961.39/612,760.10
  6. Step 6: Final answer
    x = 470,320.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.