Home / 612,330.30-845,085.78-340,425.18

Finding the Fourth Proportional to 612,330.30, 845,085.78 and 340,425.18

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Solution

The fourth proportional to 612,330.30, 845,085.78 and 340,425.18 is: 469,825.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,330.30 : 845,085.78 = 340,425.18 : x
  2. Step 2: Convert to fraction form
    612,330.30/845,085.78 = 340,425.18/x
  3. Step 3: Cross multiply
    612,330.30x = 845,085.78 × 340,425.18
  4. Step 4: Simplify right side
    612,330.30x = 287,688,478,771.94
  5. Step 5: Solve for x
    x = 287,688,478,771.94/612,330.30
  6. Step 6: Final answer
    x = 469,825.65

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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.