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Finding the Fourth Proportional to 898,005.70, 1,347,992.70 and 561,426.40

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Solution

The fourth proportional to 898,005.70, 1,347,992.70 and 561,426.40 is: 842,754.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,005.70 : 1,347,992.70 = 561,426.40 : x
  2. Step 2: Convert to fraction form
    898,005.70/1,347,992.70 = 561,426.40/x
  3. Step 3: Cross multiply
    898,005.70x = 1,347,992.70 × 561,426.40
  4. Step 4: Simplify right side
    898,005.70x = 756,798,688,787.28
  5. Step 5: Solve for x
    x = 756,798,688,787.28/898,005.70
  6. Step 6: Final answer
    x = 842,754.88

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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.