Home / 651,631.20-977,446.80-402,453.60

Finding the Fourth Proportional to 651,631.20, 977,446.80 and 402,453.60

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Solution

The fourth proportional to 651,631.20, 977,446.80 and 402,453.60 is: 603,680.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,631.20 : 977,446.80 = 402,453.60 : x
  2. Step 2: Convert to fraction form
    651,631.20/977,446.80 = 402,453.60/x
  3. Step 3: Cross multiply
    651,631.20x = 977,446.80 × 402,453.60
  4. Step 4: Simplify right side
    651,631.20x = 393,376,983,468.48
  5. Step 5: Solve for x
    x = 393,376,983,468.48/651,631.20
  6. Step 6: Final answer
    x = 603,680.40

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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.