Home / 525,461.10-788,191.65-420,485.10

Finding the Fourth Proportional to 525,461.10, 788,191.65 and 420,485.10

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Solution

The fourth proportional to 525,461.10, 788,191.65 and 420,485.10 is: 630,727.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,461.10 : 788,191.65 = 420,485.10 : x
  2. Step 2: Convert to fraction form
    525,461.10/788,191.65 = 420,485.10/x
  3. Step 3: Cross multiply
    525,461.10x = 788,191.65 × 420,485.10
  4. Step 4: Simplify right side
    525,461.10x = 331,422,844,769.42
  5. Step 5: Solve for x
    x = 331,422,844,769.42/525,461.10
  6. Step 6: Final answer
    x = 630,727.65

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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.