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Finding the Fourth Proportional to 552,528.16, 762,417.12 and 310,802.56

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Solution

The fourth proportional to 552,528.16, 762,417.12 and 310,802.56 is: 428,867.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,528.16 : 762,417.12 = 310,802.56 : x
  2. Step 2: Convert to fraction form
    552,528.16/762,417.12 = 310,802.56/x
  3. Step 3: Cross multiply
    552,528.16x = 762,417.12 × 310,802.56
  4. Step 4: Simplify right side
    552,528.16x = 236,961,192,683.83
  5. Step 5: Solve for x
    x = 236,961,192,683.83/552,528.16
  6. Step 6: Final answer
    x = 428,867.18

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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.