Home / 1,077,586.77-1,487,430.09-642,140.73

Finding the Fourth Proportional to 1,077,586.77, 1,487,430.09 and 642,140.73

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Solution

The fourth proportional to 1,077,586.77, 1,487,430.09 and 642,140.73 is: 886,368.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077,586.77 : 1,487,430.09 = 642,140.73 : x
  2. Step 2: Convert to fraction form
    1,077,586.77/1,487,430.09 = 642,140.73/x
  3. Step 3: Cross multiply
    1,077,586.77x = 1,487,430.09 × 642,140.73
  4. Step 4: Simplify right side
    1,077,586.77x = 955,139,443,816.57
  5. Step 5: Solve for x
    x = 955,139,443,816.57/1,077,586.77
  6. Step 6: Final answer
    x = 886,368.94

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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.