Home / 390,005.04-585,095.22-123,774.24

Finding the Fourth Proportional to 390,005.04, 585,095.22 and 123,774.24

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Solution

The fourth proportional to 390,005.04, 585,095.22 and 123,774.24 is: 185,689.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,005.04 : 585,095.22 = 123,774.24 : x
  2. Step 2: Convert to fraction form
    390,005.04/585,095.22 = 123,774.24/x
  3. Step 3: Cross multiply
    390,005.04x = 585,095.22 × 123,774.24
  4. Step 4: Simplify right side
    390,005.04x = 72,419,716,183.13
  5. Step 5: Solve for x
    x = 72,419,716,183.13/390,005.04
  6. Step 6: Final answer
    x = 185,689.18

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1.5x scale

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.