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Finding the Fourth Proportional to 556,266.80, 834,400.20 and 343,690.40

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Solution

The fourth proportional to 556,266.80, 834,400.20 and 343,690.40 is: 515,535.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,266.80 : 834,400.20 = 343,690.40 : x
  2. Step 2: Convert to fraction form
    556,266.80/834,400.20 = 343,690.40/x
  3. Step 3: Cross multiply
    556,266.80x = 834,400.20 × 343,690.40
  4. Step 4: Simplify right side
    556,266.80x = 286,775,338,498.08
  5. Step 5: Solve for x
    x = 286,775,338,498.08/556,266.80
  6. Step 6: Final answer
    x = 515,535.60

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Similar ratio
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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.