Home / 651,990.30-977,985.45-628,370.70

Finding the Fourth Proportional to 651,990.30, 977,985.45 and 628,370.70

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Solution

The fourth proportional to 651,990.30, 977,985.45 and 628,370.70 is: 942,556.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,990.30 : 977,985.45 = 628,370.70 : x
  2. Step 2: Convert to fraction form
    651,990.30/977,985.45 = 628,370.70/x
  3. Step 3: Cross multiply
    651,990.30x = 977,985.45 × 628,370.70
  4. Step 4: Simplify right side
    651,990.30x = 614,537,401,806.32
  5. Step 5: Solve for x
    x = 614,537,401,806.32/651,990.30
  6. Step 6: Final answer
    x = 942,556.05

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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.