Home / 388,905.60-583,588.80-283,459.20

Finding the Fourth Proportional to 388,905.60, 583,588.80 and 283,459.20

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Solution

The fourth proportional to 388,905.60, 583,588.80 and 283,459.20 is: 425,356.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,905.60 : 583,588.80 = 283,459.20 : x
  2. Step 2: Convert to fraction form
    388,905.60/583,588.80 = 283,459.20/x
  3. Step 3: Cross multiply
    388,905.60x = 583,588.80 × 283,459.20
  4. Step 4: Simplify right side
    388,905.60x = 165,423,614,376.96
  5. Step 5: Solve for x
    x = 165,423,614,376.96/388,905.60
  6. Step 6: Final answer
    x = 425,356.73

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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.