Home / 1,310,417.60-1,808,450.72-787,288.21

Finding the Fourth Proportional to 1,310,417.60, 1,808,450.72 and 787,288.21

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Solution

The fourth proportional to 1,310,417.60, 1,808,450.72 and 787,288.21 is: 1,086,502.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,417.60 : 1,808,450.72 = 787,288.21 : x
  2. Step 2: Convert to fraction form
    1,310,417.60/1,808,450.72 = 787,288.21/x
  3. Step 3: Cross multiply
    1,310,417.60x = 1,808,450.72 × 787,288.21
  4. Step 4: Simplify right side
    1,310,417.60x = 1,423,771,930,222.01
  5. Step 5: Solve for x
    x = 1,423,771,930,222.01/1,310,417.60
  6. Step 6: Final answer
    x = 1,086,502.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.