Home / 447,747.80-671,621.70-421,482.20

Finding the Fourth Proportional to 447,747.80, 671,621.70 and 421,482.20

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Solution

The fourth proportional to 447,747.80, 671,621.70 and 421,482.20 is: 632,223.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,747.80 : 671,621.70 = 421,482.20 : x
  2. Step 2: Convert to fraction form
    447,747.80/671,621.70 = 421,482.20/x
  3. Step 3: Cross multiply
    447,747.80x = 671,621.70 × 421,482.20
  4. Step 4: Simplify right side
    447,747.80x = 283,076,591,683.74
  5. Step 5: Solve for x
    x = 283,076,591,683.74/447,747.80
  6. Step 6: Final answer
    x = 632,223.30

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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.