Home / 670,721.04-925,590.65-380,387.88

Finding the Fourth Proportional to 670,721.04, 925,590.65 and 380,387.88

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Solution

The fourth proportional to 670,721.04, 925,590.65 and 380,387.88 is: 524,932.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,721.04 : 925,590.65 = 380,387.88 : x
  2. Step 2: Convert to fraction form
    670,721.04/925,590.65 = 380,387.88/x
  3. Step 3: Cross multiply
    670,721.04x = 925,590.65 × 380,387.88
  4. Step 4: Simplify right side
    670,721.04x = 352,083,463,199.38
  5. Step 5: Solve for x
    x = 352,083,463,199.38/670,721.04
  6. Step 6: Final answer
    x = 524,932.78

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Double scale
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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.