Home / 830,400.76-1,146,236.03-516,318.40

Finding the Fourth Proportional to 830,400.76, 1,146,236.03 and 516,318.40

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Solution

The fourth proportional to 830,400.76, 1,146,236.03 and 516,318.40 is: 712,695.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,400.76 : 1,146,236.03 = 516,318.40 : x
  2. Step 2: Convert to fraction form
    830,400.76/1,146,236.03 = 516,318.40/x
  3. Step 3: Cross multiply
    830,400.76x = 1,146,236.03 × 516,318.40
  4. Step 4: Simplify right side
    830,400.76x = 591,822,753,031.95
  5. Step 5: Solve for x
    x = 591,822,753,031.95/830,400.76
  6. Step 6: Final answer
    x = 712,695.34

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Double scale
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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.