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Finding the Fourth Proportional to 766,884.80, 1,058,302.08 and 427,345.60

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Solution

The fourth proportional to 766,884.80, 1,058,302.08 and 427,345.60 is: 589,737.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,884.80 : 1,058,302.08 = 427,345.60 : x
  2. Step 2: Convert to fraction form
    766,884.80/1,058,302.08 = 427,345.60/x
  3. Step 3: Cross multiply
    766,884.80x = 1,058,302.08 × 427,345.60
  4. Step 4: Simplify right side
    766,884.80x = 452,260,737,358.85
  5. Step 5: Solve for x
    x = 452,260,737,358.85/766,884.80
  6. Step 6: Final answer
    x = 589,737.52

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Double scale
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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.