Home / 1,420,521.80-2,130,782.70-578,640.20

Finding the Fourth Proportional to 1,420,521.80, 2,130,782.70 and 578,640.20

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Solution

The fourth proportional to 1,420,521.80, 2,130,782.70 and 578,640.20 is: 867,960.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,521.80 : 2,130,782.70 = 578,640.20 : x
  2. Step 2: Convert to fraction form
    1,420,521.80/2,130,782.70 = 578,640.20/x
  3. Step 3: Cross multiply
    1,420,521.80x = 2,130,782.70 × 578,640.20
  4. Step 4: Simplify right side
    1,420,521.80x = 1,232,956,527,684.54
  5. Step 5: Solve for x
    x = 1,232,956,527,684.54/1,420,521.80
  6. Step 6: Final answer
    x = 867,960.30

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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.