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Finding the Fourth Proportional to 657,643.20, 987,501.60 and 377,707.20

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Solution

The fourth proportional to 657,643.20, 987,501.60 and 377,707.20 is: 567,156.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,643.20 : 987,501.60 = 377,707.20 : x
  2. Step 2: Convert to fraction form
    657,643.20/987,501.60 = 377,707.20/x
  3. Step 3: Cross multiply
    657,643.20x = 987,501.60 × 377,707.20
  4. Step 4: Simplify right side
    657,643.20x = 372,986,464,331.52
  5. Step 5: Solve for x
    x = 372,986,464,331.52/657,643.20
  6. Step 6: Final answer
    x = 567,156.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.