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Finding the Fourth Proportional to 982,879.86, 1,356,792.74 and 660,776.77

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Solution

The fourth proportional to 982,879.86, 1,356,792.74 and 660,776.77 is: 912,153.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    982,879.86 : 1,356,792.74 = 660,776.77 : x
  2. Step 2: Convert to fraction form
    982,879.86/1,356,792.74 = 660,776.77/x
  3. Step 3: Cross multiply
    982,879.86x = 1,356,792.74 × 660,776.77
  4. Step 4: Simplify right side
    982,879.86x = 896,537,124,296.65
  5. Step 5: Solve for x
    x = 896,537,124,296.65/982,879.86
  6. Step 6: Final answer
    x = 912,153.32

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1.5x scale

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.