Home / 651,937.20-977,905.80-630,164.40

Finding the Fourth Proportional to 651,937.20, 977,905.80 and 630,164.40

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Solution

The fourth proportional to 651,937.20, 977,905.80 and 630,164.40 is: 945,246.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,937.20 : 977,905.80 = 630,164.40 : x
  2. Step 2: Convert to fraction form
    651,937.20/977,905.80 = 630,164.40/x
  3. Step 3: Cross multiply
    651,937.20x = 977,905.80 × 630,164.40
  4. Step 4: Simplify right side
    651,937.20x = 616,241,421,713.52
  5. Step 5: Solve for x
    x = 616,241,421,713.52/651,937.20
  6. Step 6: Final answer
    x = 945,246.60

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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.