Home / 485,829.02-669,935.28-418,075.76

Finding the Fourth Proportional to 485,829.02, 669,935.28 and 418,075.76

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Solution

The fourth proportional to 485,829.02, 669,935.28 and 418,075.76 is: 576,506.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,829.02 : 669,935.28 = 418,075.76 : x
  2. Step 2: Convert to fraction form
    485,829.02/669,935.28 = 418,075.76/x
  3. Step 3: Cross multiply
    485,829.02x = 669,935.28 × 418,075.76
  4. Step 4: Simplify right side
    485,829.02x = 280,083,701,336.81
  5. Step 5: Solve for x
    x = 280,083,701,336.81/485,829.02
  6. Step 6: Final answer
    x = 576,506.73

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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.