Home / 583,417.23-805,115.79-315,145.23

Finding the Fourth Proportional to 583,417.23, 805,115.79 and 315,145.23

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Solution

The fourth proportional to 583,417.23, 805,115.79 and 315,145.23 is: 434,900.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,417.23 : 805,115.79 = 315,145.23 : x
  2. Step 2: Convert to fraction form
    583,417.23/805,115.79 = 315,145.23/x
  3. Step 3: Cross multiply
    583,417.23x = 805,115.79 × 315,145.23
  4. Step 4: Simplify right side
    583,417.23x = 253,728,400,816.18
  5. Step 5: Solve for x
    x = 253,728,400,816.18/583,417.23
  6. Step 6: Final answer
    x = 434,900.42

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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.