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Finding the Fourth Proportional to 476,501.28, 657,605.28 and 315,075.84

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Solution

The fourth proportional to 476,501.28, 657,605.28 and 315,075.84 is: 434,826.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,501.28 : 657,605.28 = 315,075.84 : x
  2. Step 2: Convert to fraction form
    476,501.28/657,605.28 = 315,075.84/x
  3. Step 3: Cross multiply
    476,501.28x = 657,605.28 × 315,075.84
  4. Step 4: Simplify right side
    476,501.28x = 207,195,535,984.44
  5. Step 5: Solve for x
    x = 207,195,535,984.44/476,501.28
  6. Step 6: Final answer
    x = 434,826.82

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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.