Home / 638,722.09-958,045.53-239,329.45

Finding the Fourth Proportional to 638,722.09, 958,045.53 and 239,329.45

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Solution

The fourth proportional to 638,722.09, 958,045.53 and 239,329.45 is: 358,980.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,722.09 : 958,045.53 = 239,329.45 : x
  2. Step 2: Convert to fraction form
    638,722.09/958,045.53 = 239,329.45/x
  3. Step 3: Cross multiply
    638,722.09x = 958,045.53 × 239,329.45
  4. Step 4: Simplify right side
    638,722.09x = 229,288,509,769.86
  5. Step 5: Solve for x
    x = 229,288,509,769.86/638,722.09
  6. Step 6: Final answer
    x = 358,980.08

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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.