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Finding the Fourth Proportional to 570,320.15, 786,959.43 and 315,670.73

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Solution

The fourth proportional to 570,320.15, 786,959.43 and 315,670.73 is: 435,580.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,320.15 : 786,959.43 = 315,670.73 : x
  2. Step 2: Convert to fraction form
    570,320.15/786,959.43 = 315,670.73/x
  3. Step 3: Cross multiply
    570,320.15x = 786,959.43 × 315,670.73
  4. Step 4: Simplify right side
    570,320.15x = 248,420,057,748.48
  5. Step 5: Solve for x
    x = 248,420,057,748.48/570,320.15
  6. Step 6: Final answer
    x = 435,580.01

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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.