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Finding the Fourth Proportional to 651,408.80, 977,113.20 and 491,741.60

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Solution

The fourth proportional to 651,408.80, 977,113.20 and 491,741.60 is: 737,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,408.80 : 977,113.20 = 491,741.60 : x
  2. Step 2: Convert to fraction form
    651,408.80/977,113.20 = 491,741.60/x
  3. Step 3: Cross multiply
    651,408.80x = 977,113.20 × 491,741.60
  4. Step 4: Simplify right side
    651,408.80x = 480,487,208,349.12
  5. Step 5: Solve for x
    x = 480,487,208,349.12/651,408.80
  6. Step 6: Final answer
    x = 737,612.40

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Half scale
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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.