Home / 651,645.30-977,467.95-440,138.10

Finding the Fourth Proportional to 651,645.30, 977,467.95 and 440,138.10

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Solution

The fourth proportional to 651,645.30, 977,467.95 and 440,138.10 is: 660,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,645.30 : 977,467.95 = 440,138.10 : x
  2. Step 2: Convert to fraction form
    651,645.30/977,467.95 = 440,138.10/x
  3. Step 3: Cross multiply
    651,645.30x = 977,467.95 × 440,138.10
  4. Step 4: Simplify right side
    651,645.30x = 430,220,886,323.90
  5. Step 5: Solve for x
    x = 430,220,886,323.90/651,645.30
  6. Step 6: Final answer
    x = 660,207.15

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Double scale
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Similar ratio
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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.