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Finding the Fourth Proportional to 707,426.63, 976,897.18 and 449,386.75

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Solution

The fourth proportional to 707,426.63, 976,897.18 and 449,386.75 is: 620,565.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,426.63 : 976,897.18 = 449,386.75 : x
  2. Step 2: Convert to fraction form
    707,426.63/976,897.18 = 449,386.75/x
  3. Step 3: Cross multiply
    707,426.63x = 976,897.18 × 449,386.75
  4. Step 4: Simplify right side
    707,426.63x = 439,004,646,557.43
  5. Step 5: Solve for x
    x = 439,004,646,557.43/707,426.63
  6. Step 6: Final answer
    x = 620,565.62

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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.