Home / 1,238,485.40-1,857,728.10-899,937.80

Finding the Fourth Proportional to 1,238,485.40, 1,857,728.10 and 899,937.80

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Solution

The fourth proportional to 1,238,485.40, 1,857,728.10 and 899,937.80 is: 1,349,906.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,485.40 : 1,857,728.10 = 899,937.80 : x
  2. Step 2: Convert to fraction form
    1,238,485.40/1,857,728.10 = 899,937.80/x
  3. Step 3: Cross multiply
    1,238,485.40x = 1,857,728.10 × 899,937.80
  4. Step 4: Simplify right side
    1,238,485.40x = 1,671,839,739,312.18
  5. Step 5: Solve for x
    x = 1,671,839,739,312.18/1,238,485.40
  6. Step 6: Final answer
    x = 1,349,906.70

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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.