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Finding the Fourth Proportional to 559,411.36, 772,007.52 and 317,687.20

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Solution

The fourth proportional to 559,411.36, 772,007.52 and 317,687.20 is: 438,419.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,411.36 : 772,007.52 = 317,687.20 : x
  2. Step 2: Convert to fraction form
    559,411.36/772,007.52 = 317,687.20/x
  3. Step 3: Cross multiply
    559,411.36x = 772,007.52 × 317,687.20
  4. Step 4: Simplify right side
    559,411.36x = 245,256,907,407.74
  5. Step 5: Solve for x
    x = 245,256,907,407.74/559,411.36
  6. Step 6: Final answer
    x = 438,419.60

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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.