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Finding the Fourth Proportional to 497,777.60, 746,666.40 and 420,017.60

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Solution

The fourth proportional to 497,777.60, 746,666.40 and 420,017.60 is: 630,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,777.60 : 746,666.40 = 420,017.60 : x
  2. Step 2: Convert to fraction form
    497,777.60/746,666.40 = 420,017.60/x
  3. Step 3: Cross multiply
    497,777.60x = 746,666.40 × 420,017.60
  4. Step 4: Simplify right side
    497,777.60x = 313,613,029,328.64
  5. Step 5: Solve for x
    x = 313,613,029,328.64/497,777.60
  6. Step 6: Final answer
    x = 630,026.40

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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.