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Finding the Fourth Proportional to 691,528, 954,308.64 and 373,576

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Solution

The fourth proportional to 691,528, 954,308.64 and 373,576 is: 515,534.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,528 : 954,308.64 = 373,576 : x
  2. Step 2: Convert to fraction form
    691,528/954,308.64 = 373,576/x
  3. Step 3: Cross multiply
    691,528x = 954,308.64 × 373,576
  4. Step 4: Simplify right side
    691,528x = 356,506,804,496.64
  5. Step 5: Solve for x
    x = 356,506,804,496.64/691,528
  6. Step 6: Final answer
    x = 515,534.88

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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.