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Finding the Fourth Proportional to 508,719.49, 702,041.72 and 279,298.13

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Solution

The fourth proportional to 508,719.49, 702,041.72 and 279,298.13 is: 385,436.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,719.49 : 702,041.72 = 279,298.13 : x
  2. Step 2: Convert to fraction form
    508,719.49/702,041.72 = 279,298.13/x
  3. Step 3: Cross multiply
    508,719.49x = 702,041.72 × 279,298.13
  4. Step 4: Simplify right side
    508,719.49x = 196,078,939,577.98
  5. Step 5: Solve for x
    x = 196,078,939,577.98/508,719.49
  6. Step 6: Final answer
    x = 385,436.26

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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.