Home / 1,543,643.80-2,315,465.70-421,712.80

Finding the Fourth Proportional to 1,543,643.80, 2,315,465.70 and 421,712.80

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Solution

The fourth proportional to 1,543,643.80, 2,315,465.70 and 421,712.80 is: 632,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543,643.80 : 2,315,465.70 = 421,712.80 : x
  2. Step 2: Convert to fraction form
    1,543,643.80/2,315,465.70 = 421,712.80/x
  3. Step 3: Cross multiply
    1,543,643.80x = 2,315,465.70 × 421,712.80
  4. Step 4: Simplify right side
    1,543,643.80x = 976,461,523,650.96
  5. Step 5: Solve for x
    x = 976,461,523,650.96/1,543,643.80
  6. Step 6: Final answer
    x = 632,569.20

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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.