Home / 638,815.80-881,123.76-517,962.18

Finding the Fourth Proportional to 638,815.80, 881,123.76 and 517,962.18

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Solution

The fourth proportional to 638,815.80, 881,123.76 and 517,962.18 is: 714,429.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,815.80 : 881,123.76 = 517,962.18 : x
  2. Step 2: Convert to fraction form
    638,815.80/881,123.76 = 517,962.18/x
  3. Step 3: Cross multiply
    638,815.80x = 881,123.76 × 517,962.18
  4. Step 4: Simplify right side
    638,815.80x = 456,388,783,579.40
  5. Step 5: Solve for x
    x = 456,388,783,579.40/638,815.80
  6. Step 6: Final answer
    x = 714,429.39

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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.