Home / 651,645.20-977,467.80-402,467.60

Finding the Fourth Proportional to 651,645.20, 977,467.80 and 402,467.60

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Solution

The fourth proportional to 651,645.20, 977,467.80 and 402,467.60 is: 603,701.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,645.20 : 977,467.80 = 402,467.60 : x
  2. Step 2: Convert to fraction form
    651,645.20/977,467.80 = 402,467.60/x
  3. Step 3: Cross multiply
    651,645.20x = 977,467.80 × 402,467.60
  4. Step 4: Simplify right side
    651,645.20x = 393,399,119,543.28
  5. Step 5: Solve for x
    x = 393,399,119,543.28/651,645.20
  6. Step 6: Final answer
    x = 603,701.40

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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.