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Finding the Fourth Proportional to 612,758.10, 845,585.88 and 340,818.30

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Solution

The fourth proportional to 612,758.10, 845,585.88 and 340,818.30 is: 470,317.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,758.10 : 845,585.88 = 340,818.30 : x
  2. Step 2: Convert to fraction form
    612,758.10/845,585.88 = 340,818.30/x
  3. Step 3: Cross multiply
    612,758.10x = 845,585.88 × 340,818.30
  4. Step 4: Simplify right side
    612,758.10x = 288,191,142,125.60
  5. Step 5: Solve for x
    x = 288,191,142,125.60/612,758.10
  6. Step 6: Final answer
    x = 470,317.96

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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.