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Finding the Fourth Proportional to 557,437.63, 768,531.92 and 402,258.69

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Solution

The fourth proportional to 557,437.63, 768,531.92 and 402,258.69 is: 554,588.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,437.63 : 768,531.92 = 402,258.69 : x
  2. Step 2: Convert to fraction form
    557,437.63/768,531.92 = 402,258.69/x
  3. Step 3: Cross multiply
    557,437.63x = 768,531.92 × 402,258.69
  4. Step 4: Simplify right side
    557,437.63x = 309,148,643,362.39
  5. Step 5: Solve for x
    x = 309,148,643,362.39/557,437.63
  6. Step 6: Final answer
    x = 554,588.76

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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.