Home / 386,935.80-580,403.70-292,457.40

Finding the Fourth Proportional to 386,935.80, 580,403.70 and 292,457.40

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Solution

The fourth proportional to 386,935.80, 580,403.70 and 292,457.40 is: 438,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,935.80 : 580,403.70 = 292,457.40 : x
  2. Step 2: Convert to fraction form
    386,935.80/580,403.70 = 292,457.40/x
  3. Step 3: Cross multiply
    386,935.80x = 580,403.70 × 292,457.40
  4. Step 4: Simplify right side
    386,935.80x = 169,743,357,052.38
  5. Step 5: Solve for x
    x = 169,743,357,052.38/386,935.80
  6. Step 6: Final answer
    x = 438,686.10

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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.