Home / 1,186,867.60-1,637,880.72-643,000.96

Finding the Fourth Proportional to 1,186,867.60, 1,637,880.72 and 643,000.96

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Solution

The fourth proportional to 1,186,867.60, 1,637,880.72 and 643,000.96 is: 887,343.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,867.60 : 1,637,880.72 = 643,000.96 : x
  2. Step 2: Convert to fraction form
    1,186,867.60/1,637,880.72 = 643,000.96/x
  3. Step 3: Cross multiply
    1,186,867.60x = 1,637,880.72 × 643,000.96
  4. Step 4: Simplify right side
    1,186,867.60x = 1,053,158,875,325.49
  5. Step 5: Solve for x
    x = 1,053,158,875,325.49/1,186,867.60
  6. Step 6: Final answer
    x = 887,343.18

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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.