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Finding the Fourth Proportional to 508,712.58, 702,032.13 and 279,291.15

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Solution

The fourth proportional to 508,712.58, 702,032.13 and 279,291.15 is: 385,426.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,712.58 : 702,032.13 = 279,291.15 : x
  2. Step 2: Convert to fraction form
    508,712.58/702,032.13 = 279,291.15/x
  3. Step 3: Cross multiply
    508,712.58x = 702,032.13 × 279,291.15
  4. Step 4: Simplify right side
    508,712.58x = 196,071,360,924.65
  5. Step 5: Solve for x
    x = 196,071,360,924.65/508,712.58
  6. Step 6: Final answer
    x = 385,426.60

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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.