Home / 1,439,123.70-2,155,244.10-830,065.70

Finding the Fourth Proportional to 1,439,123.70, 2,155,244.10 and 830,065.70

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Solution

The fourth proportional to 1,439,123.70, 2,155,244.10 and 830,065.70 is: 1,243,113.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,123.70 : 2,155,244.10 = 830,065.70 : x
  2. Step 2: Convert to fraction form
    1,439,123.70/2,155,244.10 = 830,065.70/x
  3. Step 3: Cross multiply
    1,439,123.70x = 2,155,244.10 × 830,065.70
  4. Step 4: Simplify right side
    1,439,123.70x = 1,788,994,204,812.73
  5. Step 5: Solve for x
    x = 1,788,994,204,812.73/1,439,123.70
  6. Step 6: Final answer
    x = 1,243,113.57

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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.