Home / 1,186,823.60-1,637,809.84-642,970

Finding the Fourth Proportional to 1,186,823.60, 1,637,809.84 and 642,970

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Solution

The fourth proportional to 1,186,823.60, 1,637,809.84 and 642,970 is: 887,294.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,823.60 : 1,637,809.84 = 642,970 : x
  2. Step 2: Convert to fraction form
    1,186,823.60/1,637,809.84 = 642,970/x
  3. Step 3: Cross multiply
    1,186,823.60x = 1,637,809.84 × 642,970
  4. Step 4: Simplify right side
    1,186,823.60x = 1,053,062,592,824.80
  5. Step 5: Solve for x
    x = 1,053,062,592,824.80/1,186,823.60
  6. Step 6: Final answer
    x = 887,294.96

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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.