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Finding the Fourth Proportional to 657,812.10, 986,426.55 and 302,643.30

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Solution

The fourth proportional to 657,812.10, 986,426.55 and 302,643.30 is: 453,830.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,812.10 : 986,426.55 = 302,643.30 : x
  2. Step 2: Convert to fraction form
    657,812.10/986,426.55 = 302,643.30/x
  3. Step 3: Cross multiply
    657,812.10x = 986,426.55 × 302,643.30
  4. Step 4: Simplify right side
    657,812.10x = 298,535,386,299.62
  5. Step 5: Solve for x
    x = 298,535,386,299.62/657,812.10
  6. Step 6: Final answer
    x = 453,830.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.