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Finding the Fourth Proportional to 557,359.61, 769,391.12 and 376,316.51

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Solution

The fourth proportional to 557,359.61, 769,391.12 and 376,316.51 is: 519,475.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,359.61 : 769,391.12 = 376,316.51 : x
  2. Step 2: Convert to fraction form
    557,359.61/769,391.12 = 376,316.51/x
  3. Step 3: Cross multiply
    557,359.61x = 769,391.12 × 376,316.51
  4. Step 4: Simplify right side
    557,359.61x = 289,534,578,197.23
  5. Step 5: Solve for x
    x = 289,534,578,197.23/557,359.61
  6. Step 6: Final answer
    x = 519,475.35

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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.