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Finding the Fourth Proportional to 528,942.40, 792,101.40 and 423,966.40

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Solution

The fourth proportional to 528,942.40, 792,101.40 and 423,966.40 is: 634,897.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,942.40 : 792,101.40 = 423,966.40 : x
  2. Step 2: Convert to fraction form
    528,942.40/792,101.40 = 423,966.40/x
  3. Step 3: Cross multiply
    528,942.40x = 792,101.40 × 423,966.40
  4. Step 4: Simplify right side
    528,942.40x = 335,824,378,992.96
  5. Step 5: Solve for x
    x = 335,824,378,992.96/528,942.40
  6. Step 6: Final answer
    x = 634,897.82

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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.