Home / 651,621.20-977,431.80-629,848.40

Finding the Fourth Proportional to 651,621.20, 977,431.80 and 629,848.40

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Solution

The fourth proportional to 651,621.20, 977,431.80 and 629,848.40 is: 944,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,621.20 : 977,431.80 = 629,848.40 : x
  2. Step 2: Convert to fraction form
    651,621.20/977,431.80 = 629,848.40/x
  3. Step 3: Cross multiply
    651,621.20x = 977,431.80 × 629,848.40
  4. Step 4: Simplify right side
    651,621.20x = 615,633,855,339.12
  5. Step 5: Solve for x
    x = 615,633,855,339.12/651,621.20
  6. Step 6: Final answer
    x = 944,772.60

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Half scale
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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.