Home / 1,388,082.10-2,082,123.15-390,810.10

Finding the Fourth Proportional to 1,388,082.10, 2,082,123.15 and 390,810.10

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Solution

The fourth proportional to 1,388,082.10, 2,082,123.15 and 390,810.10 is: 586,215.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,082.10 : 2,082,123.15 = 390,810.10 : x
  2. Step 2: Convert to fraction form
    1,388,082.10/2,082,123.15 = 390,810.10/x
  3. Step 3: Cross multiply
    1,388,082.10x = 2,082,123.15 × 390,810.10
  4. Step 4: Simplify right side
    1,388,082.10x = 813,714,756,463.82
  5. Step 5: Solve for x
    x = 813,714,756,463.82/1,388,082.10
  6. Step 6: Final answer
    x = 586,215.15

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1.5x scale

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.