Home / 442,005.18-609,807.14-289,130.64

Finding the Fourth Proportional to 442,005.18, 609,807.14 and 289,130.64

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Solution

The fourth proportional to 442,005.18, 609,807.14 and 289,130.64 is: 398,895.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,005.18 : 609,807.14 = 289,130.64 : x
  2. Step 2: Convert to fraction form
    442,005.18/609,807.14 = 289,130.64/x
  3. Step 3: Cross multiply
    442,005.18x = 609,807.14 × 289,130.64
  4. Step 4: Simplify right side
    442,005.18x = 176,313,928,664.77
  5. Step 5: Solve for x
    x = 176,313,928,664.77/442,005.18
  6. Step 6: Final answer
    x = 398,895.62

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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.