Home / 6,638,985.40-9,958,478.10-6,575,999.80

Finding the Fourth Proportional to 6,638,985.40, 9,958,478.10 and 6,575,999.80

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Solution

The fourth proportional to 6,638,985.40, 9,958,478.10 and 6,575,999.80 is: 9,863,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638,985.40 : 9,958,478.10 = 6,575,999.80 : x
  2. Step 2: Convert to fraction form
    6,638,985.40/9,958,478.10 = 6,575,999.80/x
  3. Step 3: Cross multiply
    6,638,985.40x = 9,958,478.10 × 6,575,999.80
  4. Step 4: Simplify right side
    6,638,985.40x = 65,486,949,993,904.38
  5. Step 5: Solve for x
    x = 65,486,949,993,904.38/6,638,985.40
  6. Step 6: Final answer
    x = 9,863,999.70

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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.