Home / 747,990.45-1,032,315.44-421,314.21

Finding the Fourth Proportional to 747,990.45, 1,032,315.44 and 421,314.21

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Solution

The fourth proportional to 747,990.45, 1,032,315.44 and 421,314.21 is: 581,463.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,990.45 : 1,032,315.44 = 421,314.21 : x
  2. Step 2: Convert to fraction form
    747,990.45/1,032,315.44 = 421,314.21/x
  3. Step 3: Cross multiply
    747,990.45x = 1,032,315.44 × 421,314.21
  4. Step 4: Simplify right side
    747,990.45x = 434,929,161,967.83
  5. Step 5: Solve for x
    x = 434,929,161,967.83/747,990.45
  6. Step 6: Final answer
    x = 581,463.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.