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Finding the Fourth Proportional to 559,688.54, 772,388.26 and 317,966.72

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Solution

The fourth proportional to 559,688.54, 772,388.26 and 317,966.72 is: 438,804.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,688.54 : 772,388.26 = 317,966.72 : x
  2. Step 2: Convert to fraction form
    559,688.54/772,388.26 = 317,966.72/x
  3. Step 3: Cross multiply
    559,688.54x = 772,388.26 × 317,966.72
  4. Step 4: Simplify right side
    559,688.54x = 245,593,756,941.85
  5. Step 5: Solve for x
    x = 245,593,756,941.85/559,688.54
  6. Step 6: Final answer
    x = 438,804.34

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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.