Home / 651,948.20-977,922.30-427,999.40

Finding the Fourth Proportional to 651,948.20, 977,922.30 and 427,999.40

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Solution

The fourth proportional to 651,948.20, 977,922.30 and 427,999.40 is: 641,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,948.20 : 977,922.30 = 427,999.40 : x
  2. Step 2: Convert to fraction form
    651,948.20/977,922.30 = 427,999.40/x
  3. Step 3: Cross multiply
    651,948.20x = 977,922.30 × 427,999.40
  4. Step 4: Simplify right side
    651,948.20x = 418,550,157,646.62
  5. Step 5: Solve for x
    x = 418,550,157,646.62/651,948.20
  6. Step 6: Final answer
    x = 641,999.10

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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.