Home / 657,705.20-986,557.80-342,777.20

Finding the Fourth Proportional to 657,705.20, 986,557.80 and 342,777.20

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Solution

The fourth proportional to 657,705.20, 986,557.80 and 342,777.20 is: 514,165.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,705.20 : 986,557.80 = 342,777.20 : x
  2. Step 2: Convert to fraction form
    657,705.20/986,557.80 = 342,777.20/x
  3. Step 3: Cross multiply
    657,705.20x = 986,557.80 × 342,777.20
  4. Step 4: Simplify right side
    657,705.20x = 338,169,520,322.16
  5. Step 5: Solve for x
    x = 338,169,520,322.16/657,705.20
  6. Step 6: Final answer
    x = 514,165.80

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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.