Home / 1,420,293.40-2,129,403.30-578,411.80

Finding the Fourth Proportional to 1,420,293.40, 2,129,403.30 and 578,411.80

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Solution

The fourth proportional to 1,420,293.40, 2,129,403.30 and 578,411.80 is: 867,195.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,293.40 : 2,129,403.30 = 578,411.80 : x
  2. Step 2: Convert to fraction form
    1,420,293.40/2,129,403.30 = 578,411.80/x
  3. Step 3: Cross multiply
    1,420,293.40x = 2,129,403.30 × 578,411.80
  4. Step 4: Simplify right side
    1,420,293.40x = 1,231,671,995,678.94
  5. Step 5: Solve for x
    x = 1,231,671,995,678.94/1,420,293.40
  6. Step 6: Final answer
    x = 867,195.47

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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.