Home / 1,386,928.49-1,913,795.57-766,649.89

Finding the Fourth Proportional to 1,386,928.49, 1,913,795.57 and 766,649.89

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Solution

The fourth proportional to 1,386,928.49, 1,913,795.57 and 766,649.89 is: 1,057,885.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,928.49 : 1,913,795.57 = 766,649.89 : x
  2. Step 2: Convert to fraction form
    1,386,928.49/1,913,795.57 = 766,649.89/x
  3. Step 3: Cross multiply
    1,386,928.49x = 1,913,795.57 × 766,649.89
  4. Step 4: Simplify right side
    1,386,928.49x = 1,467,211,160,355.12
  5. Step 5: Solve for x
    x = 1,467,211,160,355.12/1,386,928.49
  6. Step 6: Final answer
    x = 1,057,885.23

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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.