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Finding the Fourth Proportional to 657,074.80, 985,417.80 and 257,485.60

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Solution

The fourth proportional to 657,074.80, 985,417.80 and 257,485.60 is: 386,152.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,074.80 : 985,417.80 = 257,485.60 : x
  2. Step 2: Convert to fraction form
    657,074.80/985,417.80 = 257,485.60/x
  3. Step 3: Cross multiply
    657,074.80x = 985,417.80 × 257,485.60
  4. Step 4: Simplify right side
    657,074.80x = 253,730,893,483.68
  5. Step 5: Solve for x
    x = 253,730,893,483.68/657,074.80
  6. Step 6: Final answer
    x = 386,152.22

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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.