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Finding the Fourth Proportional to 836,465.10, 1,253,312.55 and 480,858.90

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Solution

The fourth proportional to 836,465.10, 1,253,312.55 and 480,858.90 is: 720,492.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,465.10 : 1,253,312.55 = 480,858.90 : x
  2. Step 2: Convert to fraction form
    836,465.10/1,253,312.55 = 480,858.90/x
  3. Step 3: Cross multiply
    836,465.10x = 1,253,312.55 × 480,858.90
  4. Step 4: Simplify right side
    836,465.10x = 602,666,494,149.20
  5. Step 5: Solve for x
    x = 602,666,494,149.20/836,465.10
  6. Step 6: Final answer
    x = 720,492.10

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Double scale
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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.