Home / 662,228.09-913,764.81-390,259.07

Finding the Fourth Proportional to 662,228.09, 913,764.81 and 390,259.07

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Solution

The fourth proportional to 662,228.09, 913,764.81 and 390,259.07 is: 538,492.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,228.09 : 913,764.81 = 390,259.07 : x
  2. Step 2: Convert to fraction form
    662,228.09/913,764.81 = 390,259.07/x
  3. Step 3: Cross multiply
    662,228.09x = 913,764.81 × 390,259.07
  4. Step 4: Simplify right side
    662,228.09x = 356,605,000,380.50
  5. Step 5: Solve for x
    x = 356,605,000,380.50/662,228.09
  6. Step 6: Final answer
    x = 538,492.72

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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.