Home / 1,683,503.20-2,525,254.80-421,328.80

Finding the Fourth Proportional to 1,683,503.20, 2,525,254.80 and 421,328.80

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Solution

The fourth proportional to 1,683,503.20, 2,525,254.80 and 421,328.80 is: 631,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,683,503.20 : 2,525,254.80 = 421,328.80 : x
  2. Step 2: Convert to fraction form
    1,683,503.20/2,525,254.80 = 421,328.80/x
  3. Step 3: Cross multiply
    1,683,503.20x = 2,525,254.80 × 421,328.80
  4. Step 4: Simplify right side
    1,683,503.20x = 1,063,962,574,578.24
  5. Step 5: Solve for x
    x = 1,063,962,574,578.24/1,683,503.20
  6. Step 6: Final answer
    x = 631,993.20

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Double scale
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Similar ratio
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1.5x scale

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.