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Finding the Fourth Proportional to 553,330.56, 761,988.18 and 480,700.29

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Solution

The fourth proportional to 553,330.56, 761,988.18 and 480,700.29 is: 661,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,330.56 : 761,988.18 = 480,700.29 : x
  2. Step 2: Convert to fraction form
    553,330.56/761,988.18 = 480,700.29/x
  3. Step 3: Cross multiply
    553,330.56x = 761,988.18 × 480,700.29
  4. Step 4: Simplify right side
    553,330.56x = 366,287,939,102.57
  5. Step 5: Solve for x
    x = 366,287,939,102.57/553,330.56
  6. Step 6: Final answer
    x = 661,969.47

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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.