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Finding the Fourth Proportional to 636,463.44, 878,324.58 and 346,075.20

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Solution

The fourth proportional to 636,463.44, 878,324.58 and 346,075.20 is: 477,586.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,463.44 : 878,324.58 = 346,075.20 : x
  2. Step 2: Convert to fraction form
    636,463.44/878,324.58 = 346,075.20/x
  3. Step 3: Cross multiply
    636,463.44x = 878,324.58 × 346,075.20
  4. Step 4: Simplify right side
    636,463.44x = 303,966,354,688.42
  5. Step 5: Solve for x
    x = 303,966,354,688.42/636,463.44
  6. Step 6: Final answer
    x = 477,586.51

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Double scale
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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.