Home / 578,670.40-868,005.60-368,459.20

Finding the Fourth Proportional to 578,670.40, 868,005.60 and 368,459.20

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Solution

The fourth proportional to 578,670.40, 868,005.60 and 368,459.20 is: 552,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,670.40 : 868,005.60 = 368,459.20 : x
  2. Step 2: Convert to fraction form
    578,670.40/868,005.60 = 368,459.20/x
  3. Step 3: Cross multiply
    578,670.40x = 868,005.60 × 368,459.20
  4. Step 4: Simplify right side
    578,670.40x = 319,824,648,971.52
  5. Step 5: Solve for x
    x = 319,824,648,971.52/578,670.40
  6. Step 6: Final answer
    x = 552,688.80

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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.