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Finding the Fourth Proportional to 634,570.60, 875,465.94 and 405,136.48

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Solution

The fourth proportional to 634,570.60, 875,465.94 and 405,136.48 is: 558,934.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,570.60 : 875,465.94 = 405,136.48 : x
  2. Step 2: Convert to fraction form
    634,570.60/875,465.94 = 405,136.48/x
  3. Step 3: Cross multiply
    634,570.60x = 875,465.94 × 405,136.48
  4. Step 4: Simplify right side
    634,570.60x = 354,683,189,291.49
  5. Step 5: Solve for x
    x = 354,683,189,291.49/634,570.60
  6. Step 6: Final answer
    x = 558,934.17

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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.