Home / 651,921,336.10-977,882,004.15-393,003,280.90

Finding the Fourth Proportional to 651,921,336.10, 977,882,004.15 and 393,003,280.90

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Solution

The fourth proportional to 651,921,336.10, 977,882,004.15 and 393,003,280.90 is: 589,504,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,921,336.10 : 977,882,004.15 = 393,003,280.90 : x
  2. Step 2: Convert to fraction form
    651,921,336.10/977,882,004.15 = 393,003,280.90/x
  3. Step 3: Cross multiply
    651,921,336.10x = 977,882,004.15 × 393,003,280.90
  4. Step 4: Simplify right side
    651,921,336.10x = 384,310,835,964,017,408
  5. Step 5: Solve for x
    x = 384,310,835,964,017,408/651,921,336.10
  6. Step 6: Final answer
    x = 589,504,921.35

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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.