Home / 611,784.09-917,769.29-312,101.10

Finding the Fourth Proportional to 611,784.09, 917,769.29 and 312,101.10

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Solution

The fourth proportional to 611,784.09, 917,769.29 and 312,101.10 is: 468,199.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,784.09 : 917,769.29 = 312,101.10 : x
  2. Step 2: Convert to fraction form
    611,784.09/917,769.29 = 312,101.10/x
  3. Step 3: Cross multiply
    611,784.09x = 917,769.29 × 312,101.10
  4. Step 4: Simplify right side
    611,784.09x = 286,436,803,394.71
  5. Step 5: Solve for x
    x = 286,436,803,394.71/611,784.09
  6. Step 6: Final answer
    x = 468,199.17

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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.