Home / 1,238,487.40-1,857,731.10-899,939.80

Finding the Fourth Proportional to 1,238,487.40, 1,857,731.10 and 899,939.80

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Solution

The fourth proportional to 1,238,487.40, 1,857,731.10 and 899,939.80 is: 1,349,909.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,487.40 : 1,857,731.10 = 899,939.80 : x
  2. Step 2: Convert to fraction form
    1,238,487.40/1,857,731.10 = 899,939.80/x
  3. Step 3: Cross multiply
    1,238,487.40x = 1,857,731.10 × 899,939.80
  4. Step 4: Simplify right side
    1,238,487.40x = 1,671,846,154,587.78
  5. Step 5: Solve for x
    x = 1,671,846,154,587.78/1,238,487.40
  6. Step 6: Final answer
    x = 1,349,909.70

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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.