Home / 651,985.20-977,977.80-630,212.40

Finding the Fourth Proportional to 651,985.20, 977,977.80 and 630,212.40

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Solution

The fourth proportional to 651,985.20, 977,977.80 and 630,212.40 is: 945,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,985.20 : 977,977.80 = 630,212.40 : x
  2. Step 2: Convert to fraction form
    651,985.20/977,977.80 = 630,212.40/x
  3. Step 3: Cross multiply
    651,985.20x = 977,977.80 × 630,212.40
  4. Step 4: Simplify right side
    651,985.20x = 616,333,736,484.72
  5. Step 5: Solve for x
    x = 616,333,736,484.72/651,985.20
  6. Step 6: Final answer
    x = 945,318.60

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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.