Home / 1,186,285.28-1,637,074.40-642,425.28

Finding the Fourth Proportional to 1,186,285.28, 1,637,074.40 and 642,425.28

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Solution

The fourth proportional to 1,186,285.28, 1,637,074.40 and 642,425.28 is: 886,547.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,285.28 : 1,637,074.40 = 642,425.28 : x
  2. Step 2: Convert to fraction form
    1,186,285.28/1,637,074.40 = 642,425.28/x
  3. Step 3: Cross multiply
    1,186,285.28x = 1,637,074.40 × 642,425.28
  4. Step 4: Simplify right side
    1,186,285.28x = 1,051,697,979,800.83
  5. Step 5: Solve for x
    x = 1,051,697,979,800.83/1,186,285.28
  6. Step 6: Final answer
    x = 886,547.27

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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.