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Finding the Fourth Proportional to 630,239.64, 870,156.60 and 484,787.14

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Solution

The fourth proportional to 630,239.64, 870,156.60 and 484,787.14 is: 669,333.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,239.64 : 870,156.60 = 484,787.14 : x
  2. Step 2: Convert to fraction form
    630,239.64/870,156.60 = 484,787.14/x
  3. Step 3: Cross multiply
    630,239.64x = 870,156.60 × 484,787.14
  4. Step 4: Simplify right side
    630,239.64x = 421,840,729,466.12
  5. Step 5: Solve for x
    x = 421,840,729,466.12/630,239.64
  6. Step 6: Final answer
    x = 669,333.86

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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.