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Finding the Fourth Proportional to 651,651.40, 977,477.10 and 314,950.60

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Solution

The fourth proportional to 651,651.40, 977,477.10 and 314,950.60 is: 472,425.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,651.40 : 977,477.10 = 314,950.60 : x
  2. Step 2: Convert to fraction form
    651,651.40/977,477.10 = 314,950.60/x
  3. Step 3: Cross multiply
    651,651.40x = 977,477.10 × 314,950.60
  4. Step 4: Simplify right side
    651,651.40x = 307,856,999,131.26
  5. Step 5: Solve for x
    x = 307,856,999,131.26/651,651.40
  6. Step 6: Final answer
    x = 472,425.90

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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.