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Finding the Fourth Proportional to 528,951.40, 792,114.90 and 423,975.40

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Solution

The fourth proportional to 528,951.40, 792,114.90 and 423,975.40 is: 634,911.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,951.40 : 792,114.90 = 423,975.40 : x
  2. Step 2: Convert to fraction form
    528,951.40/792,114.90 = 423,975.40/x
  3. Step 3: Cross multiply
    528,951.40x = 792,114.90 × 423,975.40
  4. Step 4: Simplify right side
    528,951.40x = 335,837,231,573.46
  5. Step 5: Solve for x
    x = 335,837,231,573.46/528,951.40
  6. Step 6: Final answer
    x = 634,911.32

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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.