Home / 611,853.35-917,685.25-312,555.11

Finding the Fourth Proportional to 611,853.35, 917,685.25 and 312,555.11

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Solution

The fourth proportional to 611,853.35, 917,685.25 and 312,555.11 is: 468,784.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,853.35 : 917,685.25 = 312,555.11 : x
  2. Step 2: Convert to fraction form
    611,853.35/917,685.25 = 312,555.11/x
  3. Step 3: Cross multiply
    611,853.35x = 917,685.25 × 312,555.11
  4. Step 4: Simplify right side
    611,853.35x = 286,827,208,889.31
  5. Step 5: Solve for x
    x = 286,827,208,889.31/611,853.35
  6. Step 6: Final answer
    x = 468,784.25

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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.