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Finding the Fourth Proportional to 578,805.78, 798,046.20 and 425,376.84

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Solution

The fourth proportional to 578,805.78, 798,046.20 and 425,376.84 is: 586,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,805.78 : 798,046.20 = 425,376.84 : x
  2. Step 2: Convert to fraction form
    578,805.78/798,046.20 = 425,376.84/x
  3. Step 3: Cross multiply
    578,805.78x = 798,046.20 × 425,376.84
  4. Step 4: Simplify right side
    578,805.78x = 339,470,370,730.01
  5. Step 5: Solve for x
    x = 339,470,370,730.01/578,805.78
  6. Step 6: Final answer
    x = 586,501.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.