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Finding the Fourth Proportional to 657,090, 906,815.88 and 370,603.62

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Solution

The fourth proportional to 657,090, 906,815.88 and 370,603.62 is: 511,450.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,090 : 906,815.88 = 370,603.62 : x
  2. Step 2: Convert to fraction form
    657,090/906,815.88 = 370,603.62/x
  3. Step 3: Cross multiply
    657,090x = 906,815.88 × 370,603.62
  4. Step 4: Simplify right side
    657,090x = 336,069,247,801.49
  5. Step 5: Solve for x
    x = 336,069,247,801.49/657,090
  6. Step 6: Final answer
    x = 511,450.86

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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.