Home / 662,527.36-913,982.04-390,409.36

Finding the Fourth Proportional to 662,527.36, 913,982.04 and 390,409.36

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Solution

The fourth proportional to 662,527.36, 913,982.04 and 390,409.36 is: 538,584.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,527.36 : 913,982.04 = 390,409.36 : x
  2. Step 2: Convert to fraction form
    662,527.36/913,982.04 = 390,409.36/x
  3. Step 3: Cross multiply
    662,527.36x = 913,982.04 × 390,409.36
  4. Step 4: Simplify right side
    662,527.36x = 356,827,143,287.89
  5. Step 5: Solve for x
    x = 356,827,143,287.89/662,527.36
  6. Step 6: Final answer
    x = 538,584.77

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1.5x scale

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.