Home / 385,814.40-578,721.60-245,846.40

Finding the Fourth Proportional to 385,814.40, 578,721.60 and 245,846.40

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Solution

The fourth proportional to 385,814.40, 578,721.60 and 245,846.40 is: 368,769.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,814.40 : 578,721.60 = 245,846.40 : x
  2. Step 2: Convert to fraction form
    385,814.40/578,721.60 = 245,846.40/x
  3. Step 3: Cross multiply
    385,814.40x = 578,721.60 × 245,846.40
  4. Step 4: Simplify right side
    385,814.40x = 142,276,621,962.24
  5. Step 5: Solve for x
    x = 142,276,621,962.24/385,814.40
  6. Step 6: Final answer
    x = 368,769.60

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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.