Home / 812,370.26-1,120,718.02-489,901.16

Finding the Fourth Proportional to 812,370.26, 1,120,718.02 and 489,901.16

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Solution

The fourth proportional to 812,370.26, 1,120,718.02 and 489,901.16 is: 675,850.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,370.26 : 1,120,718.02 = 489,901.16 : x
  2. Step 2: Convert to fraction form
    812,370.26/1,120,718.02 = 489,901.16/x
  3. Step 3: Cross multiply
    812,370.26x = 1,120,718.02 × 489,901.16
  4. Step 4: Simplify right side
    812,370.26x = 549,041,058,030.90
  5. Step 5: Solve for x
    x = 549,041,058,030.90/812,370.26
  6. Step 6: Final answer
    x = 675,850.76

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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.