Home / 708,802.08-978,125.04-386,518.20

Finding the Fourth Proportional to 708,802.08, 978,125.04 and 386,518.20

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Solution

The fourth proportional to 708,802.08, 978,125.04 and 386,518.20 is: 533,383.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,802.08 : 978,125.04 = 386,518.20 : x
  2. Step 2: Convert to fraction form
    708,802.08/978,125.04 = 386,518.20/x
  3. Step 3: Cross multiply
    708,802.08x = 978,125.04 × 386,518.20
  4. Step 4: Simplify right side
    708,802.08x = 378,063,129,835.73
  5. Step 5: Solve for x
    x = 378,063,129,835.73/708,802.08
  6. Step 6: Final answer
    x = 533,383.21

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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.