Home / 665,382.08-917,966.88-410,290.40

Finding the Fourth Proportional to 665,382.08, 917,966.88 and 410,290.40

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Solution

The fourth proportional to 665,382.08, 917,966.88 and 410,290.40 is: 566,040.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,382.08 : 917,966.88 = 410,290.40 : x
  2. Step 2: Convert to fraction form
    665,382.08/917,966.88 = 410,290.40/x
  3. Step 3: Cross multiply
    665,382.08x = 917,966.88 × 410,290.40
  4. Step 4: Simplify right side
    665,382.08x = 376,632,998,381.95
  5. Step 5: Solve for x
    x = 376,632,998,381.95/665,382.08
  6. Step 6: Final answer
    x = 566,040.19

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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.