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Finding the Fourth Proportional to 648,498.99, 888,439.47 and 624,248.43

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Solution

The fourth proportional to 648,498.99, 888,439.47 and 624,248.43 is: 855,216.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,498.99 : 888,439.47 = 624,248.43 : x
  2. Step 2: Convert to fraction form
    648,498.99/888,439.47 = 624,248.43/x
  3. Step 3: Cross multiply
    648,498.99x = 888,439.47 × 624,248.43
  4. Step 4: Simplify right side
    648,498.99x = 554,606,944,297.53
  5. Step 5: Solve for x
    x = 554,606,944,297.53/648,498.99
  6. Step 6: Final answer
    x = 855,216.36

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.