Home / 1,243,728.52-1,865,918.58-390,765.70

Finding the Fourth Proportional to 1,243,728.52, 1,865,918.58 and 390,765.70

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Solution

The fourth proportional to 1,243,728.52, 1,865,918.58 and 390,765.70 is: 586,250.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,728.52 : 1,865,918.58 = 390,765.70 : x
  2. Step 2: Convert to fraction form
    1,243,728.52/1,865,918.58 = 390,765.70/x
  3. Step 3: Cross multiply
    1,243,728.52x = 1,865,918.58 × 390,765.70
  4. Step 4: Simplify right side
    1,243,728.52x = 729,136,980,056.71
  5. Step 5: Solve for x
    x = 729,136,980,056.71/1,243,728.52
  6. Step 6: Final answer
    x = 586,250.91

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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.