Home / 390,830.24-586,287.84-124,528.16

Finding the Fourth Proportional to 390,830.24, 586,287.84 and 124,528.16

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Solution

The fourth proportional to 390,830.24, 586,287.84 and 124,528.16 is: 186,805.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,830.24 : 586,287.84 = 124,528.16 : x
  2. Step 2: Convert to fraction form
    390,830.24/586,287.84 = 124,528.16/x
  3. Step 3: Cross multiply
    390,830.24x = 586,287.84 × 124,528.16
  4. Step 4: Simplify right side
    390,830.24x = 73,009,345,945.57
  5. Step 5: Solve for x
    x = 73,009,345,945.57/390,830.24
  6. Step 6: Final answer
    x = 186,805.78

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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.