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Finding the Fourth Proportional to 767,810.60, 1,151,715.90 and 341,345.60

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Solution

The fourth proportional to 767,810.60, 1,151,715.90 and 341,345.60 is: 512,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,810.60 : 1,151,715.90 = 341,345.60 : x
  2. Step 2: Convert to fraction form
    767,810.60/1,151,715.90 = 341,345.60/x
  3. Step 3: Cross multiply
    767,810.60x = 1,151,715.90 × 341,345.60
  4. Step 4: Simplify right side
    767,810.60x = 393,133,154,915.04
  5. Step 5: Solve for x
    x = 393,133,154,915.04/767,810.60
  6. Step 6: Final answer
    x = 512,018.40

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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.