Home / 390,830.74-586,288.59-124,528.66

Finding the Fourth Proportional to 390,830.74, 586,288.59 and 124,528.66

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Solution

The fourth proportional to 390,830.74, 586,288.59 and 124,528.66 is: 186,806.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,830.74 : 586,288.59 = 124,528.66 : x
  2. Step 2: Convert to fraction form
    390,830.74/586,288.59 = 124,528.66/x
  3. Step 3: Cross multiply
    390,830.74x = 586,288.59 × 124,528.66
  4. Step 4: Simplify right side
    390,830.74x = 73,009,732,485.99
  5. Step 5: Solve for x
    x = 73,009,732,485.99/390,830.74
  6. Step 6: Final answer
    x = 186,806.53

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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.