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Finding the Fourth Proportional to 636,598.27, 878,489.70 and 346,206.40

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Solution

The fourth proportional to 636,598.27, 878,489.70 and 346,206.40 is: 477,756.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,598.27 : 878,489.70 = 346,206.40 : x
  2. Step 2: Convert to fraction form
    636,598.27/878,489.70 = 346,206.40/x
  3. Step 3: Cross multiply
    636,598.27x = 878,489.70 × 346,206.40
  4. Step 4: Simplify right side
    636,598.27x = 304,138,756,474.08
  5. Step 5: Solve for x
    x = 304,138,756,474.08/636,598.27
  6. Step 6: Final answer
    x = 477,756.18

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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.