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Finding the Fourth Proportional to 865,392, 1,193,465.16 and 720,677.04

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Solution

The fourth proportional to 865,392, 1,193,465.16 and 720,677.04 is: 993,888.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,392 : 1,193,465.16 = 720,677.04 : x
  2. Step 2: Convert to fraction form
    865,392/1,193,465.16 = 720,677.04/x
  3. Step 3: Cross multiply
    865,392x = 1,193,465.16 × 720,677.04
  4. Step 4: Simplify right side
    865,392x = 860,102,938,851.93
  5. Step 5: Solve for x
    x = 860,102,938,851.93/865,392
  6. Step 6: Final answer
    x = 993,888.25

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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.