Home / 1,386,666.50-1,913,490.83-766,445.60

Finding the Fourth Proportional to 1,386,666.50, 1,913,490.83 and 766,445.60

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Solution

The fourth proportional to 1,386,666.50, 1,913,490.83 and 766,445.60 is: 1,057,634.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,666.50 : 1,913,490.83 = 766,445.60 : x
  2. Step 2: Convert to fraction form
    1,386,666.50/1,913,490.83 = 766,445.60/x
  3. Step 3: Cross multiply
    1,386,666.50x = 1,913,490.83 × 766,445.60
  4. Step 4: Simplify right side
    1,386,666.50x = 1,466,586,633,993.69
  5. Step 5: Solve for x
    x = 1,466,586,633,993.69/1,386,666.50
  6. Step 6: Final answer
    x = 1,057,634.72

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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.