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Finding the Fourth Proportional to 491,572.69, 678,008.14 and 370,719.07

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Solution

The fourth proportional to 491,572.69, 678,008.14 and 370,719.07 is: 511,319.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,572.69 : 678,008.14 = 370,719.07 : x
  2. Step 2: Convert to fraction form
    491,572.69/678,008.14 = 370,719.07/x
  3. Step 3: Cross multiply
    491,572.69x = 678,008.14 × 370,719.07
  4. Step 4: Simplify right side
    491,572.69x = 251,350,547,113.23
  5. Step 5: Solve for x
    x = 251,350,547,113.23/491,572.69
  6. Step 6: Final answer
    x = 511,319.18

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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.