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Finding the Fourth Proportional to 485,466.90, 728,200.35 and 402,522.90

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Solution

The fourth proportional to 485,466.90, 728,200.35 and 402,522.90 is: 603,784.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,466.90 : 728,200.35 = 402,522.90 : x
  2. Step 2: Convert to fraction form
    485,466.90/728,200.35 = 402,522.90/x
  3. Step 3: Cross multiply
    485,466.90x = 728,200.35 × 402,522.90
  4. Step 4: Simplify right side
    485,466.90x = 293,117,316,663.02
  5. Step 5: Solve for x
    x = 293,117,316,663.02/485,466.90
  6. Step 6: Final answer
    x = 603,784.35

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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.