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Finding the Fourth Proportional to 703,916.82, 971,392.50 and 397,987.92

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Solution

The fourth proportional to 703,916.82, 971,392.50 and 397,987.92 is: 549,216.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,916.82 : 971,392.50 = 397,987.92 : x
  2. Step 2: Convert to fraction form
    703,916.82/971,392.50 = 397,987.92/x
  3. Step 3: Cross multiply
    703,916.82x = 971,392.50 × 397,987.92
  4. Step 4: Simplify right side
    703,916.82x = 386,602,480,578.60
  5. Step 5: Solve for x
    x = 386,602,480,578.60/703,916.82
  6. Step 6: Final answer
    x = 549,216.14

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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.