Home / 1,420,345.18-2,130,659.93-409,491.91

Finding the Fourth Proportional to 1,420,345.18, 2,130,659.93 and 409,491.91

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Solution

The fourth proportional to 1,420,345.18, 2,130,659.93 and 409,491.91 is: 614,278.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,345.18 : 2,130,659.93 = 409,491.91 : x
  2. Step 2: Convert to fraction form
    1,420,345.18/2,130,659.93 = 409,491.91/x
  3. Step 3: Cross multiply
    1,420,345.18x = 2,130,659.93 × 409,491.91
  4. Step 4: Simplify right side
    1,420,345.18x = 872,488,004,296.17
  5. Step 5: Solve for x
    x = 872,488,004,296.17/1,420,345.18
  6. Step 6: Final answer
    x = 614,278.85

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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.